diff --git a/.github/workflows/cicd.yaml b/.github/workflows/cicd.yaml
index 3100c93b..00860c10 100644
--- a/.github/workflows/cicd.yaml
+++ b/.github/workflows/cicd.yaml
@@ -108,7 +108,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v16
 
       - name: Use Magic Nix Cache
-        uses: DeterminateSystems/magic-nix-cache-action@v8
+        uses: DeterminateSystems/magic-nix-cache-action@v9
 
       - name: Build server and harness
         run: |
@@ -146,7 +146,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v16
 
       - name: Use Magic Nix Cache
-        uses: DeterminateSystems/magic-nix-cache-action@v8
+        uses: DeterminateSystems/magic-nix-cache-action@v9
 
       - name: semgrep
         run: |
diff --git a/.github/workflows/dependencies.yaml b/.github/workflows/dependencies.yaml
index 471c6b5b..bc874868 100644
--- a/.github/workflows/dependencies.yaml
+++ b/.github/workflows/dependencies.yaml
@@ -23,7 +23,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v16
 
       - name: Use Magic Nix Cache
-        uses: DeterminateSystems/magic-nix-cache-action@v8
+        uses: DeterminateSystems/magic-nix-cache-action@v9
 
       - name: Update gomod2nix.toml (if go.mod has changed)
         run: |
diff --git a/.github/workflows/dst.yaml b/.github/workflows/dst.yaml
index ec48af61..4ec9f920 100644
--- a/.github/workflows/dst.yaml
+++ b/.github/workflows/dst.yaml
@@ -27,7 +27,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v16
 
       - name: Use Magic Nix Cache
-        uses: DeterminateSystems/magic-nix-cache-action@v8
+        uses: DeterminateSystems/magic-nix-cache-action@v9
 
       - name: Build resonate binary
         run: |
diff --git a/.github/workflows/release_check_version.yaml b/.github/workflows/release_check_version.yaml
index 2dff8a43..8eb3c15a 100644
--- a/.github/workflows/release_check_version.yaml
+++ b/.github/workflows/release_check_version.yaml
@@ -18,7 +18,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v16
 
       - name: Use Magic Nix Cache
-        uses: DeterminateSystems/magic-nix-cache-action@v8
+        uses: DeterminateSystems/magic-nix-cache-action@v9
 
       - name: Build Resonate binary
         run: |
diff --git a/.github/workflows/release_publish_github_artifacts.yaml b/.github/workflows/release_publish_github_artifacts.yaml
index 89ca96f3..bb8c0507 100644
--- a/.github/workflows/release_publish_github_artifacts.yaml
+++ b/.github/workflows/release_publish_github_artifacts.yaml
@@ -43,7 +43,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@v16
 
       - name: Use Magic Nix Cache
-        uses: DeterminateSystems/magic-nix-cache-action@v8
+        uses: DeterminateSystems/magic-nix-cache-action@v9
 
       - name: Build Resonate binary
         run: |