diff --git a/README.md b/README.md
index bb64bae..c53c90a 100644
--- a/README.md
+++ b/README.md
@@ -122,3 +122,18 @@ adb shell chmod +x /data/local/tmp/crc32c_tests
 adb shell 'cd /data/local/tmp && ./crc32c_tests'
 adb shell rm /data/local/tmp/crc32c_tests
 ```
+
+
+### iOS testing
+
+The following command builds the project against the iOS SDK, which is useful
+for benchmarking against Apple's ARM chips ("Apple Sillicon").
+
+```bash
+cmake .. -GXcode \
+    -DCMAKE_SYSTEM_NAME=iOS \
+    -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" \
+    -DCMAKE_OSX_DEPLOYMENT_TARGET=13 \
+    -DCMAKE_XCODE_ATTRIBUTE_ONLY_ACTIVE_ARCH=NO DCRC32C_USE_GLOG=0 \
+    -DCMAKE_BUILD_TYPE=Release && cmake --build .
+```
diff --git a/third_party/benchmark b/third_party/benchmark
index e991355..08fdf6e 160000
--- a/third_party/benchmark
+++ b/third_party/benchmark
@@ -1 +1 @@
-Subproject commit e991355c02b93fe17713efe04cbc2e278e00fdbd
+Subproject commit 08fdf6eb84cc8a5b65d84041257c908de5879bf5
diff --git a/third_party/googletest b/third_party/googletest
index 3b49be0..0953a17 160000
--- a/third_party/googletest
+++ b/third_party/googletest
@@ -1 +1 @@
-Subproject commit 3b49be074d5c1340eeb447e6a8e78427051e675a
+Subproject commit 0953a17a4281fc26831da647ad3fcd5e21e6473b