diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5ca9b0d1..b7518766 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -42,7 +42,7 @@ jobs:
             accept-flake-config = true
 
       - name: Check Nix flake inputs
-        uses: DeterminateSystems/flake-checker-action@v8
+        uses: DeterminateSystems/flake-checker-action@v9
 
       - name: Github actions built-in cache
         uses: DeterminateSystems/magic-nix-cache-action@v7
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 2b24c2fe..025bb092 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -16,7 +16,7 @@ jobs:
       - name: Enable magic Nix cache
         uses: DeterminateSystems/magic-nix-cache-action@v7
       - name: Check flake
-        uses: DeterminateSystems/flake-checker-action@v8
+        uses: DeterminateSystems/flake-checker-action@v9
       - name: Update flake.lock
         uses: DeterminateSystems/update-flake-lock@v23
         with: