diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index fa083111..1f6d6bf7 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           # Use base.sha, not head.sha: checking out fork code under
           # pull_request_target would give untrusted code access to secrets.
@@ -41,7 +41,7 @@ jobs:
         id: claude-review
         if: env.CLAUDE_TOKEN != ''
         continue-on-error: true
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@5fb899572b81d2bb648d4d187173a2f423a9677c # v1 (v1.0.96)
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 75e83cb5..19c8e94d 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -26,13 +26,13 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           fetch-depth: 1
 
       - name: Run Claude Code
         id: claude
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@5fb899572b81d2bb648d4d187173a2f423a9677c # v1 (v1.0.96)
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/spec_tests/hed-examples b/spec_tests/hed-examples
index 3ffbc98e..bdba8555 160000
--- a/spec_tests/hed-examples
+++ b/spec_tests/hed-examples
@@ -1 +1 @@
-Subproject commit 3ffbc98ec68630b525b27d322d625244dffcef3a
+Subproject commit bdba8555fc96d51638743b5f86a463764559fc1f
diff --git a/spec_tests/hed-schemas b/spec_tests/hed-schemas
index 2edc0260..9097af8d 160000
--- a/spec_tests/hed-schemas
+++ b/spec_tests/hed-schemas
@@ -1 +1 @@
-Subproject commit 2edc0260e4c4ef3d58ffcb6779f5032c2a3b43ed
+Subproject commit 9097af8d38dd5a05251d1f08b52d23aae2796970
diff --git a/spec_tests/hed-tests b/spec_tests/hed-tests
index 8613e3d0..e4739429 160000
--- a/spec_tests/hed-tests
+++ b/spec_tests/hed-tests
@@ -1 +1 @@
-Subproject commit 8613e3d09182d70dcd44cbed94b7f7cab5191a4a
+Subproject commit e4739429864444835160219e5dac55809ec7270f