diff --git a/examples/generate-docs.rs b/examples/generate-docs.rs
index 99c42d2..11d91e3 100644
--- a/examples/generate-docs.rs
+++ b/examples/generate-docs.rs
@@ -6,7 +6,7 @@ use std::io::prelude::*;
 const MANPAGES_DIR: &str = "./target/manpages";
 
 fn generate_manpage(page: String, name: &str) {
-    let file = File::create(format!("{}/{}.1.gz", MANPAGES_DIR, name))
+    let file = File::create(format!("{MANPAGES_DIR}/{name}.1.gz"))
         .expect("Should be able to open file in target directory");
     let mut encoder = GzEncoder::new(file, Compression::best());
     encoder
diff --git a/src/key.rs b/src/key.rs
index 05d80b4..71940e8 100644
--- a/src/key.rs
+++ b/src/key.rs
@@ -326,7 +326,7 @@ pub(crate) fn manage(yubikey: &mut YubiKey) -> Result<(), Error> {
             let pin = request_pin(
                 |prev_error| {
                     if let Some(err) = prev_error {
-                        eprintln!("{}", err);
+                        eprintln!("{err}");
                     }
                     Password::new()
                         .with_prompt(fl!("mgr-choose-new-pin"))
diff --git a/src/main.rs b/src/main.rs
index 3add1be..0bbb5f4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -296,8 +296,8 @@ fn list(flags: PluginFlags, all: bool) -> Result<(), Error> {
         flags,
         all,
         |_, recipient, metadata| {
-            println!("{}", metadata);
-            println!("{}", recipient);
+            println!("{metadata}");
+            println!("{recipient}");
         },
     )
 }
@@ -411,9 +411,9 @@ fn main() -> Result<(), Error> {
                                 .validity()
                                 .not_before
                                 .to_rfc2822()
-                                .unwrap_or_else(|e| format!("Invalid date: {}", e));
+                                .unwrap_or_else(|e| format!("Invalid date: {e}"));
 
-                            format!("{}, created: {}", name, created)
+                            format!("{name}, created: {created}")
                         })
                     })
             })
@@ -631,14 +631,8 @@ fn main() -> Result<(), Error> {
         // If `rage` binary is installed, use it in examples. Otherwise default to `age`.
         let age_binary = which::which("rage").map(|_| "rage").unwrap_or("age");
 
-        let encrypt_usage = format!(
-            "$ cat foo.txt | {} -r {} -o foo.txt.age",
-            age_binary, recipient
-        );
-        let decrypt_usage = format!(
-            "$ cat foo.txt.age | {} -d -i {} > foo.txt",
-            age_binary, file_name
-        );
+        let encrypt_usage = format!("$ cat foo.txt | {age_binary} -r {recipient} -o foo.txt.age");
+        let decrypt_usage = format!("$ cat foo.txt.age | {age_binary} -d -i {file_name} > foo.txt");
         let identity_usage = format!(
             "$ age-plugin-yubikey -i --serial {} --slot {} > {}",
             stub.serial,
diff --git a/src/util.rs b/src/util.rs
index bf57573..b44d221 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -177,7 +177,7 @@ impl Metadata {
                     .validity()
                     .not_before
                     .to_rfc2822()
-                    .unwrap_or_else(|e| format!("Invalid date: {}", e)),
+                    .unwrap_or_else(|e| format!("Invalid date: {e}")),
                 pin_policy,
                 touch_policy,
             })