diff --git a/.github/workflows/__zstd-bundle-fallback.yml b/.github/workflows/__zstd-bundle-fallback.yml
index 55f7f55a4c..d495f2126f 100644
--- a/.github/workflows/__zstd-bundle-fallback.yml
+++ b/.github/workflows/__zstd-bundle-fallback.yml
@@ -27,6 +27,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - os: macos-latest
+            version: linked
+          - os: windows-latest
+            version: linked
           - os: ubuntu-latest
             version: linked
     name: Zstandard bundle fallback
diff --git a/.github/workflows/__zstd-bundle.yml b/.github/workflows/__zstd-bundle.yml
index fc895ca6d8..f43ae77834 100644
--- a/.github/workflows/__zstd-bundle.yml
+++ b/.github/workflows/__zstd-bundle.yml
@@ -27,6 +27,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - os: macos-latest
+            version: linked
+          - os: windows-latest
+            version: linked
           - os: ubuntu-latest
             version: linked
     name: Zstandard bundle
diff --git a/pr-checks/checks/zstd-bundle-fallback.yml b/pr-checks/checks/zstd-bundle-fallback.yml
index c3a88793f8..ff68514819 100644
--- a/pr-checks/checks/zstd-bundle-fallback.yml
+++ b/pr-checks/checks/zstd-bundle-fallback.yml
@@ -3,6 +3,8 @@ description: "Tests the fallback for when downloading a Zstandard-compressed Cod
 versions:
   - linked
 operatingSystems:
+  - macos
+  - windows
   - ubuntu
 env:
   CODEQL_ACTION_ZSTD_BUNDLE: true
diff --git a/pr-checks/checks/zstd-bundle.yml b/pr-checks/checks/zstd-bundle.yml
index a88a4a6d5e..6affcbc7d9 100644
--- a/pr-checks/checks/zstd-bundle.yml
+++ b/pr-checks/checks/zstd-bundle.yml
@@ -3,6 +3,8 @@ description: "Tests the feature flag that downloads a Zstandard-compressed CodeQ
 versions:
   - linked
 operatingSystems:
+  - macos
+  - windows
   - ubuntu
 env:
   CODEQL_ACTION_ZSTD_BUNDLE: true