diff --git a/.github/workflows/deltachat-rpc-server.yml b/.github/workflows/deltachat-rpc-server.yml
index db8f1d2265..e3bb4f0231 100644
--- a/.github/workflows/deltachat-rpc-server.yml
+++ b/.github/workflows/deltachat-rpc-server.yml
@@ -35,7 +35,6 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
 
       - name: Build deltachat-rpc-server binaries
         run: nix build .#deltachat-rpc-server-${{ matrix.arch }}-linux
@@ -60,7 +59,6 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
 
       - name: Build deltachat-rpc-server binaries
         run: nix build .#deltachat-rpc-server-${{ matrix.arch }}
@@ -112,7 +110,6 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
 
       - name: Build deltachat-rpc-server binaries
         run: nix build .#deltachat-rpc-server-${{ matrix.arch }}-android
@@ -140,7 +137,6 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
 
       - name: Download Linux aarch64 binary
         uses: actions/download-artifact@v4
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 2c59bab55d..fd459dd938 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -24,7 +24,6 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: nix fmt
 
       # Check that formatting does not change anything.
@@ -85,7 +84,6 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: nix build .#${{ matrix.installable }}
 
   build-macos:
@@ -105,5 +103,4 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
       - run: nix build .#${{ matrix.installable }}
diff --git a/.github/workflows/repl.yml b/.github/workflows/repl.yml
index 9d23ed66ab..fc5e881d8a 100644
--- a/.github/workflows/repl.yml
+++ b/.github/workflows/repl.yml
@@ -19,7 +19,6 @@ jobs:
           show-progress: false
           persist-credentials: false
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Build
         run: nix build .#deltachat-repl-win64
       - name: Upload binary
diff --git a/.github/workflows/upload-docs.yml b/.github/workflows/upload-docs.yml
index 096b0e72fc..19a9d62b1c 100644
--- a/.github/workflows/upload-docs.yml
+++ b/.github/workflows/upload-docs.yml
@@ -37,7 +37,6 @@ jobs:
           persist-credentials: false
           fetch-depth: 0 # Fetch history to calculate VCS version number.
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Build Python documentation
         run: nix build .#python-docs
       - name: Upload to py.delta.chat
@@ -57,7 +56,6 @@ jobs:
           persist-credentials: false
           fetch-depth: 0 # Fetch history to calculate VCS version number.
       - uses: DeterminateSystems/nix-installer-action@main
-      - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Build C documentation
         run: nix build .#docs
       - name: Upload to c.delta.chat