diff --git a/.github/actions/publish/action.yml b/.github/actions/publish/action.yml
index 997bd372..72751116 100644
--- a/.github/actions/publish/action.yml
+++ b/.github/actions/publish/action.yml
@@ -116,7 +116,7 @@ runs:
 
     - name: Install DigiCert Client tools from Github Custom Actions marketplace
       if: runner.os == 'Windows'
-      uses: digicert/ssm-code-signing@v1.0.0
+      uses: digicert/ssm-code-signing@b300bb7e8c2ab85257d660fe5b6c6374131ca2ef # v1.0.0
 
     - name: Package release
       shell: bash
diff --git a/.github/workflows/flowzone.yml b/.github/workflows/flowzone.yml
index 1a70cf5d..ecbdedd0 100644
--- a/.github/workflows/flowzone.yml
+++ b/.github/workflows/flowzone.yml
@@ -21,13 +21,13 @@ jobs:
       custom_test_matrix: >
         {
           "os": [
-            ["windows-2022"],
+            ["windows-2019"],
           ]
         }
       custom_publish_matrix: >
         {
           "os": [
-            ["windows-2022"],
+            ["windows-2019"],
           ]
         }
       restrict_custom_actions: false