diff --git a/.github/workflows/update.yaml b/.github/workflows/update.yaml
deleted file mode 100644
index 7431456..0000000
--- a/.github/workflows/update.yaml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: update-flake-lock
-
-on:
-  workflow_dispatch: # allows manual triggering
-  schedule:
-    - cron: '0 15 * * *' # running daily at 00:15 AM
-
-jobs:
-  update-lockfile:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-
-      - uses: cachix/install-nix-action@v20
-        with:
-          extra_nix_config: |
-            accept-flake-config = true
-            
-      - uses: cachix/cachix-action@v12
-        with:
-          name: aciceri-emacs
-          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-
-      - name: Update flake.lock
-        uses: aciceri/update-flake-lock@main
-        with:
-          custom-logic: |
-            EOF=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
-            echo "DIFF_CLOSURES<<$EOF" >> $GITHUB_ENV
-            nix run .#diff-closures | sed 's/^ *//g' >> $GITHUB_ENV
-            echo "$EOF" >> $GITHUB_ENV
-          pr-title: "Automatic `flake.lock` update"
-          pr-body: |
-            # Automatic update
-            ## Inputs updated
-            ```
-            {{ env.GIT_COMMIT_MESSAGE }}
-            ```
-            ## Closures diff
-            ```
-            {{ env.DIFF_CLOSURES }}
-            ```
-          pr-labels: |
-            flake-inputs
-            automatic
-          token: ${{ secrets.PR_UPDATE_FLAKE_TOKEN }} # to open the PR using my GitHub account, needed to trigger the `build` workflow
diff --git a/ci/default.nix b/ci/default.nix
index 1994688..78a988f 100644
--- a/ci/default.nix
+++ b/ci/default.nix
@@ -16,16 +16,5 @@
       hour = 13;
       dayOfWeek = ["Mon" "Tue" "Wed" "Thu" "Fri" "Sat" "Sun"];
     };
-    pullRequestBody = ''
-      Update `flake.lock`. See the commit message(s) for details.
-      
-      You may reset this branch by deleting it and re-running the update job. xs
-
-          git push origin :${config.hercules-ci.flake-update.updateBranch}
-
-      ```
-      ${builtins.readFile config.packages.x86_64-linux.diff-closures}
-      ```
-    '';
   };
 }
diff --git a/flake.nix b/flake.nix
index 9d9677f..049dbdd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -42,7 +42,7 @@
         ./packages
         ./hmModules
         ./formatter
-        ./diff-closures
+        # ./diff-closures
 	./checks
 	./ci
       ];