diff --git a/.github/workflows/ci-docs.yml b/.github/workflows/ci-docs.yml
index 7d34b1ca1..0eadd1f40 100644
--- a/.github/workflows/ci-docs.yml
+++ b/.github/workflows/ci-docs.yml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v4.2.0
         with:
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
       - name: Set current version
         run:  echo "DOCSPELL_VERSION=$(cat version.sbt | grep version | cut -d= -f2 | xargs)" >> $GITHUB_ENV
       - name: Build website (${{ env.DOCSPELL_VERSION }})
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 60a07e4c7..fc8954b45 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
           fetch-depth: 100
       - name: Fetch tags
         run: git fetch --depth=100 origin +refs/tags/*:refs/tags/*
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
       - name: sbt ci ${{ github.ref }}
         run: nix develop .#ci --command sbt ci
   ci:
diff --git a/.github/workflows/release-nightly.yml b/.github/workflows/release-nightly.yml
index 85017f7c8..0b1d36514 100644
--- a/.github/workflows/release-nightly.yml
+++ b/.github/workflows/release-nightly.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4.2.0
         with:
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
       - name: Set current version
         run:  echo "DOCSPELL_VERSION=$(cat version.sbt | grep version | cut -d= -f2 | xargs)" >> $GITHUB_ENV
       - name: sbt ci ${{ github.ref }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index af11d6156..945654a3e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4.2.0
         with:
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
       - name: Set current version
         run:  echo "DOCSPELL_VERSION=$(cat version.sbt | grep version | cut -d= -f2 | xargs)" >> $GITHUB_ENV
       - name: sbt make-pkg (${{ env.DOCSPELL_VERSION }})
diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
index 4bc5a55ea..4e6badd49 100644
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v4.2.0
         with:
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
       - name: Set current version
         run:  echo "DOCSPELL_VERSION=$(cat version.sbt | grep version | cut -d= -f2 | xargs)" >> $GITHUB_ENV
       - name: Build website (${{ env.DOCSPELL_VERSION }})