diff --git a/.github/workflows/build-with-nix.yml b/.github/workflows/build-with-nix.yml
index 8e922766..a322308f 100644
--- a/.github/workflows/build-with-nix.yml
+++ b/.github/workflows/build-with-nix.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ${{matrix.os}}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@V28
+    - uses: cachix/install-nix-action@v30
     - uses: cachix/cachix-action@v15
       with:
         name: tket
@@ -32,7 +32,7 @@ jobs:
   #  runs-on: nixos-gpu
   #  steps:
   #  - uses: actions/checkout@v4
-  #  - uses: cachix/install-nix-action@V28
+  #  - uses: cachix/install-nix-action@v30
   #  - uses: cachix/cachix-action@v15
   #    with:
   #      name: tket