diff --git a/jimfs/pom.xml b/jimfs/pom.xml
index 017387be..cdf544f4 100644
--- a/jimfs/pom.xml
+++ b/jimfs/pom.xml
@@ -61,8 +61,8 @@
       <optional>true</optional>
     </dependency>
     <dependency>
-      <groupId>org.checkerframework</groupId>
-      <artifactId>checker-qual</artifactId>
+      <groupId>org.jspecify</groupId>
+      <artifactId>jspecify</artifactId>
       <optional>true</optional>
     </dependency>
 
diff --git a/jimfs/src/main/java/com/google/common/jimfs/AbstractWatchService.java b/jimfs/src/main/java/com/google/common/jimfs/AbstractWatchService.java
index 2ccaa1b2..ce7d25bf 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/AbstractWatchService.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/AbstractWatchService.java
@@ -42,7 +42,7 @@
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Abstract implementation of {@link WatchService}. Provides the means for registering and managing
diff --git a/jimfs/src/main/java/com/google/common/jimfs/AclAttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/AclAttributeProvider.java
index 9b543d31..5e85c730 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/AclAttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/AclAttributeProvider.java
@@ -29,7 +29,7 @@
 import java.nio.file.attribute.UserPrincipal;
 import java.util.List;
 import java.util.Map;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Attribute provider that provides the {@link AclFileAttributeView} ("acl").
diff --git a/jimfs/src/main/java/com/google/common/jimfs/AttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/AttributeProvider.java
index b975c985..7f2aa6d6 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/AttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/AttributeProvider.java
@@ -24,7 +24,7 @@
 import java.nio.file.attribute.FileAttributeView;
 import java.util.Arrays;
 import java.util.Map;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Abstract provider for handling a specific file attribute view.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/AttributeService.java b/jimfs/src/main/java/com/google/common/jimfs/AttributeService.java
index 3bae38d7..efc407ac 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/AttributeService.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/AttributeService.java
@@ -36,7 +36,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Service providing all attribute related operations for a file store. One piece of the file store
diff --git a/jimfs/src/main/java/com/google/common/jimfs/BasicAttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/BasicAttributeProvider.java
index 43272ee3..2a43fb99 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/BasicAttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/BasicAttributeProvider.java
@@ -23,7 +23,7 @@
 import java.nio.file.attribute.BasicFileAttributes;
 import java.nio.file.attribute.FileAttributeView;
 import java.nio.file.attribute.FileTime;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Attribute provider that provides attributes common to all file systems, the {@link
diff --git a/jimfs/src/main/java/com/google/common/jimfs/Configuration.java b/jimfs/src/main/java/com/google/common/jimfs/Configuration.java
index 7801ea7e..93af863b 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/Configuration.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/Configuration.java
@@ -45,7 +45,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.regex.Pattern;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Immutable configuration for an in-memory file system. A {@code Configuration} is passed to a
diff --git a/jimfs/src/main/java/com/google/common/jimfs/Directory.java b/jimfs/src/main/java/com/google/common/jimfs/Directory.java
index e65eb348..166a3f30 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/Directory.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/Directory.java
@@ -22,7 +22,7 @@
 import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import java.nio.file.attribute.FileTime;
 import java.util.Iterator;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * A table of {@linkplain DirectoryEntry directory entries}.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/DirectoryEntry.java b/jimfs/src/main/java/com/google/common/jimfs/DirectoryEntry.java
index 6492a59b..b20759d7 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/DirectoryEntry.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/DirectoryEntry.java
@@ -27,7 +27,7 @@
 import java.nio.file.NotLinkException;
 import java.nio.file.Path;
 import java.util.Objects;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Entry in a directory, containing references to the directory itself, the file the entry links to
diff --git a/jimfs/src/main/java/com/google/common/jimfs/DosAttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/DosAttributeProvider.java
index 9a8ed189..91244d81 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/DosAttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/DosAttributeProvider.java
@@ -27,7 +27,7 @@
 import java.nio.file.attribute.FileAttributeView;
 import java.nio.file.attribute.FileTime;
 import java.util.Map;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Attribute provider that provides the {@link DosFileAttributeView} ("dos") and allows the reading
diff --git a/jimfs/src/main/java/com/google/common/jimfs/File.java b/jimfs/src/main/java/com/google/common/jimfs/File.java
index 71b25016..9a9deeba 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/File.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/File.java
@@ -26,7 +26,7 @@
 import java.io.IOException;
 import java.nio.file.attribute.FileTime;
 import java.util.concurrent.locks.ReadWriteLock;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * A file object, containing both the file's metadata and content.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/FileSystemView.java b/jimfs/src/main/java/com/google/common/jimfs/FileSystemView.java
index 702326ff..3f75519e 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/FileSystemView.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/FileSystemView.java
@@ -50,7 +50,7 @@
 import java.util.Set;
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReadWriteLock;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * View of a file system with a specific working directory. As all file system operations need to
diff --git a/jimfs/src/main/java/com/google/common/jimfs/FileTree.java b/jimfs/src/main/java/com/google/common/jimfs/FileTree.java
index cacb16ac..5ebdf683 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/FileTree.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/FileTree.java
@@ -27,7 +27,7 @@
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Set;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * The tree of directories and files for the file system. Contains the file system root directories
diff --git a/jimfs/src/main/java/com/google/common/jimfs/Handler.java b/jimfs/src/main/java/com/google/common/jimfs/Handler.java
index 18c305b6..766446cb 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/Handler.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/Handler.java
@@ -23,7 +23,7 @@
 import java.net.URL;
 import java.net.URLConnection;
 import java.net.URLStreamHandler;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@link URLStreamHandler} implementation for jimfs. Named {@code Handler} so that the class can be
diff --git a/jimfs/src/main/java/com/google/common/jimfs/Jimfs.java b/jimfs/src/main/java/com/google/common/jimfs/Jimfs.java
index 6719913d..121b1ec7 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/Jimfs.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/Jimfs.java
@@ -33,7 +33,7 @@
 import java.util.UUID;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Static factory methods for creating new Jimfs file systems. File systems may either be created
diff --git a/jimfs/src/main/java/com/google/common/jimfs/JimfsAsynchronousFileChannel.java b/jimfs/src/main/java/com/google/common/jimfs/JimfsAsynchronousFileChannel.java
index 36c0af32..6a295768 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/JimfsAsynchronousFileChannel.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/JimfsAsynchronousFileChannel.java
@@ -34,7 +34,7 @@
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@link AsynchronousFileChannel} implementation that delegates to a {@link JimfsFileChannel}.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/JimfsFileStore.java b/jimfs/src/main/java/com/google/common/jimfs/JimfsFileStore.java
index 08ae3e36..021cf0ab 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/JimfsFileStore.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/JimfsFileStore.java
@@ -34,7 +34,7 @@
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReadWriteLock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@link FileStore} implementation which provides methods for file creation, lookup and attribute
diff --git a/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystem.java b/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystem.java
index 4cc0d20b..6eaa4ec7 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystem.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystem.java
@@ -33,7 +33,7 @@
 import java.nio.file.attribute.UserPrincipalLookupService;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@link FileSystem} implementation for Jimfs. Most behavior for the file system is implemented by
diff --git a/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystemProvider.java b/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystemProvider.java
index 915bc344..6c176c2e 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystemProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystemProvider.java
@@ -48,7 +48,7 @@
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ExecutorService;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@link FileSystemProvider} implementation for Jimfs. This provider implements the actual file
diff --git a/jimfs/src/main/java/com/google/common/jimfs/JimfsPath.java b/jimfs/src/main/java/com/google/common/jimfs/JimfsPath.java
index 0ff00f62..29f15971 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/JimfsPath.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/JimfsPath.java
@@ -41,7 +41,7 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.Objects;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Jimfs implementation of {@link Path}. Creation of new {@code Path} objects is delegated to the
diff --git a/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java b/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java
index db72f046..427355eb 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/JimfsSecureDirectoryStream.java
@@ -35,7 +35,7 @@
 import java.nio.file.attribute.FileAttributeView;
 import java.util.Iterator;
 import java.util.Set;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Secure directory stream implementation that uses a {@link FileSystemView} with the stream's
diff --git a/jimfs/src/main/java/com/google/common/jimfs/Name.java b/jimfs/src/main/java/com/google/common/jimfs/Name.java
index 0f5a83a2..f283ea1c 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/Name.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/Name.java
@@ -20,7 +20,7 @@
 
 import com.google.common.annotations.VisibleForTesting;
 import java.util.Comparator;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Immutable representation of a file name. Used both for the name components of paths and as the
diff --git a/jimfs/src/main/java/com/google/common/jimfs/OwnerAttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/OwnerAttributeProvider.java
index 156be1b3..394a75db 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/OwnerAttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/OwnerAttributeProvider.java
@@ -26,7 +26,7 @@
 import java.nio.file.attribute.FileOwnerAttributeView;
 import java.nio.file.attribute.UserPrincipal;
 import java.util.Map;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Attribute provider that provides the {@link FileOwnerAttributeView} ("owner").
diff --git a/jimfs/src/main/java/com/google/common/jimfs/PathService.java b/jimfs/src/main/java/com/google/common/jimfs/PathService.java
index 2dbf6785..d2496df3 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/PathService.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/PathService.java
@@ -38,7 +38,7 @@
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Service for creating {@link JimfsPath} instances and handling other path-related operations.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/PathType.java b/jimfs/src/main/java/com/google/common/jimfs/PathType.java
index 1ac75336..3d63fffd 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/PathType.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/PathType.java
@@ -26,7 +26,7 @@
 import java.net.URISyntaxException;
 import java.nio.file.InvalidPathException;
 import java.util.Arrays;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * An object defining a specific type of path. Knows how to parse strings to a path and how to
diff --git a/jimfs/src/main/java/com/google/common/jimfs/PathURLConnection.java b/jimfs/src/main/java/com/google/common/jimfs/PathURLConnection.java
index 6626657b..9f66579c 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/PathURLConnection.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/PathURLConnection.java
@@ -43,7 +43,7 @@
 import java.util.Locale;
 import java.util.Map;
 import java.util.TimeZone;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * {@code URLConnection} implementation.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/PosixAttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/PosixAttributeProvider.java
index 490ef82b..4f092836 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/PosixAttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/PosixAttributeProvider.java
@@ -35,7 +35,7 @@
 import java.nio.file.attribute.UserPrincipal;
 import java.util.Map;
 import java.util.Set;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Attribute provider that provides the {@link PosixFileAttributeView} ("posix") and allows reading
diff --git a/jimfs/src/main/java/com/google/common/jimfs/StandardAttributeProviders.java b/jimfs/src/main/java/com/google/common/jimfs/StandardAttributeProviders.java
index 264a8990..fc7035e5 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/StandardAttributeProviders.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/StandardAttributeProviders.java
@@ -17,7 +17,7 @@
 package com.google.common.jimfs;
 
 import com.google.common.collect.ImmutableMap;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Static registry of {@link AttributeProvider} implementations for the standard set of file
diff --git a/jimfs/src/main/java/com/google/common/jimfs/UnixAttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/UnixAttributeProvider.java
index 6f793d7b..18660846 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/UnixAttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/UnixAttributeProvider.java
@@ -28,7 +28,7 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.atomic.AtomicInteger;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Attribute provider that provides the "unix" attribute view.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/UnixPathType.java b/jimfs/src/main/java/com/google/common/jimfs/UnixPathType.java
index 35b7bcf7..2e280460 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/UnixPathType.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/UnixPathType.java
@@ -19,7 +19,7 @@
 import static com.google.common.base.Preconditions.checkArgument;
 
 import java.nio.file.InvalidPathException;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Unix-style path type.
diff --git a/jimfs/src/main/java/com/google/common/jimfs/UserDefinedAttributeProvider.java b/jimfs/src/main/java/com/google/common/jimfs/UserDefinedAttributeProvider.java
index 1da028a1..234caa03 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/UserDefinedAttributeProvider.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/UserDefinedAttributeProvider.java
@@ -25,7 +25,7 @@
 import java.nio.file.attribute.FileAttributeView;
 import java.nio.file.attribute.UserDefinedFileAttributeView;
 import java.util.List;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Attribute provider that provides the {@link UserDefinedFileAttributeView} ("user"). Unlike most
diff --git a/jimfs/src/main/java/com/google/common/jimfs/WindowsPathType.java b/jimfs/src/main/java/com/google/common/jimfs/WindowsPathType.java
index bfd92eac..e4e68b5e 100644
--- a/jimfs/src/main/java/com/google/common/jimfs/WindowsPathType.java
+++ b/jimfs/src/main/java/com/google/common/jimfs/WindowsPathType.java
@@ -20,7 +20,7 @@
 import java.util.Iterator;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Windows-style path type.
diff --git a/jimfs/src/test/java/com/google/common/jimfs/AbstractPathMatcherTest.java b/jimfs/src/test/java/com/google/common/jimfs/AbstractPathMatcherTest.java
index 141cc133..fbe916b0 100644
--- a/jimfs/src/test/java/com/google/common/jimfs/AbstractPathMatcherTest.java
+++ b/jimfs/src/test/java/com/google/common/jimfs/AbstractPathMatcherTest.java
@@ -34,7 +34,7 @@
 import java.nio.file.WatchService;
 import java.util.Iterator;
 import java.util.regex.PatternSyntaxException;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Abstract base class for tests of {@link PathMatcher} implementations.
diff --git a/jimfs/src/test/java/com/google/common/jimfs/DirectoryTest.java b/jimfs/src/test/java/com/google/common/jimfs/DirectoryTest.java
index ed097d8e..da3163e9 100644
--- a/jimfs/src/test/java/com/google/common/jimfs/DirectoryTest.java
+++ b/jimfs/src/test/java/com/google/common/jimfs/DirectoryTest.java
@@ -28,7 +28,7 @@
 import com.google.common.collect.Iterables;
 import java.util.HashSet;
 import java.util.Set;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/jimfs/src/test/java/com/google/common/jimfs/FileTreeTest.java b/jimfs/src/test/java/com/google/common/jimfs/FileTreeTest.java
index 55032d93..51675016 100644
--- a/jimfs/src/test/java/com/google/common/jimfs/FileTreeTest.java
+++ b/jimfs/src/test/java/com/google/common/jimfs/FileTreeTest.java
@@ -32,7 +32,7 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Random;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
diff --git a/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java b/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java
index 991b1286..0a812d32 100644
--- a/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java
+++ b/jimfs/src/test/java/com/google/common/jimfs/PathSubject.java
@@ -37,7 +37,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /**
  * Subject for doing assertions on file system paths.
diff --git a/jimfs/src/test/java/com/google/common/jimfs/PathTypeTest.java b/jimfs/src/test/java/com/google/common/jimfs/PathTypeTest.java
index 53e08fe7..b8cb30a8 100644
--- a/jimfs/src/test/java/com/google/common/jimfs/PathTypeTest.java
+++ b/jimfs/src/test/java/com/google/common/jimfs/PathTypeTest.java
@@ -22,7 +22,7 @@
 import com.google.common.collect.ImmutableList;
 import com.google.common.jimfs.PathType.ParseResult;
 import java.net.URI;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
diff --git a/jimfs/src/test/java/com/google/common/jimfs/TestAttributeProvider.java b/jimfs/src/test/java/com/google/common/jimfs/TestAttributeProvider.java
index b5360477..9921f276 100644
--- a/jimfs/src/test/java/com/google/common/jimfs/TestAttributeProvider.java
+++ b/jimfs/src/test/java/com/google/common/jimfs/TestAttributeProvider.java
@@ -26,7 +26,7 @@
 import java.nio.file.attribute.FileTime;
 import java.util.HashMap;
 import java.util.Map;
-import org.checkerframework.checker.nullness.qual.Nullable;
+import org.jspecify.annotations.Nullable;
 
 /** @author Colin Decker */
 public final class TestAttributeProvider extends AttributeProvider {
diff --git a/pom.xml b/pom.xml
index d8309172..972d634f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -129,9 +129,9 @@
         <version>3.0.2</version>
       </dependency>
       <dependency>
-        <groupId>org.checkerframework</groupId>
-        <artifactId>checker-qual</artifactId>
-        <version>3.48.2</version>
+        <groupId>org.jspecify</groupId>
+        <artifactId>jspecify</artifactId>
+        <version>1.0.0</version>
       </dependency>
 
       <!-- Test dependencies -->