diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d08aae9d7b70..e2dee7f9aa66 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -475,6 +475,19 @@ jobs:
       run: |
         diff -ru crates/wasi/wit crates/wasi-http/wit
 
+    # Record some CPU details; this is helpful information if tests fail due
+    # to CPU-specific features.
+    - name: CPU information
+      run: lscpu
+      if: matrix.os == 'ubuntu-latest'
+    - name: CPU information
+      run: sysctl hw
+      if: matrix.os == 'macos-latest'
+    - name: CPU information
+      run: wmic cpu list /format:list
+      shell: pwsh
+      if: matrix.os == 'windows-latest'
+
     # Build and test all features
     - run: ./ci/run-tests.sh --locked
       env: