diff --git a/.github/workflows/develop.yml b/.github/workflows/develop.yml
index cf8df8a..423b42f 100644
--- a/.github/workflows/develop.yml
+++ b/.github/workflows/develop.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: ⚡ Restore cache
         uses: actions/cache/restore@v3
@@ -52,10 +52,10 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Install nix
-        uses: cachix/install-nix-action@v22
+        uses: cachix/install-nix-action@v27
 
       - name: Set up cachix
-        uses: cachix/cachix-action@v12
+        uses: cachix/cachix-action@v14
         with:
           name: holochain-ci
 
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8a059a8..8a06d49 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,13 +14,13 @@ jobs:
 
     steps:
       - name: Fetch source code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install nix
-        uses: cachix/install-nix-action@v22
+        uses: cachix/install-nix-action@v27
 
       - name: Set up cachix
-        uses: cachix/cachix-action@v12
+        uses: cachix/cachix-action@v14
         with:
           name: holochain-ci