diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b5d98950..69a7f8f3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
 
       - name: Install Nix
         if: ${{ matrix.use-nix }}
-        uses: DeterminateSystems/nix-installer-action@v19
+        uses: DeterminateSystems/nix-installer-action@v20
 
       - name: Setup Nix cache
         if: ${{ matrix.use-nix }}
@@ -55,7 +55,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v19
+        uses: DeterminateSystems/nix-installer-action@v20
 
       - name: Setup Nix cache
         uses: DeterminateSystems/magic-nix-cache-action@v13
diff --git a/.github/workflows/clippy.yml b/.github/workflows/clippy.yml
index 6791f843..9269093e 100644
--- a/.github/workflows/clippy.yml
+++ b/.github/workflows/clippy.yml
@@ -28,7 +28,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v19
+        uses: DeterminateSystems/nix-installer-action@v20
 
       - name: Setup Nix cache
         uses: DeterminateSystems/magic-nix-cache-action@v13
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 5ca7a9ba..9bebc0a6 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v19
+        uses: DeterminateSystems/nix-installer-action@v20
 
       - name: Setup Nix cache
         uses: DeterminateSystems/magic-nix-cache-action@v13
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index 943a91c5..c7a27df1 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v19
+        uses: DeterminateSystems/nix-installer-action@v20
 
       - name: Update flake.lock
         id: update