diff --git a/.github/workflows/zig_update.yaml b/.github/workflows/zig_update.yaml
new file mode 100644
index 00000000..13d2dbf2
--- /dev/null
+++ b/.github/workflows/zig_update.yaml
@@ -0,0 +1,28 @@
+name: Zig Update
+
+on:
+  schedule:
+    - cron: 0 0 * * 1
+  workflow_dispatch:
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Update
+        run: |
+          OLD_VERSION="$(grep -m 1 -oP '^\s+"\K\d+\.\d+\.\d+(?=":)' zig/private/versions.bzl)"
+          bazel run //util:update_zig_versions
+          [ -z "$(git status --porcelain=v1 zig/private/versions.bzl 2>/dev/null)" ] || {
+            NEW_VERSION="$(grep -m 1 -oP '^\s+"\K\d+\.\d+\.\d+(?=":)' zig/private/versions.bzl)"
+            git add zig/private/versions.bzl 
+            readarray -t FILES < <(git grep -l -F "$OLD_VERSION" -- ':(exclude)zig/private/versions.bzl')
+            sed -i "s/${OLD_VERSION//./\\.}/$NEW_VERSION/g" "${FILES[@]}"
+            git add "${FILES[@]}"
+            git commit -m 'update Zig versions'
+            gh pr create \
+              --title "chore: update Zig versions up to $NEW_VERSION" \
+              --body "- [ ] Check that the automatic version replacements make sense."
+          }
diff --git a/util/update_zig_versions.py b/util/update_zig_versions.py
index 4fd1aa82..6c619433 100755
--- a/util/update_zig_versions.py
+++ b/util/update_zig_versions.py
@@ -110,7 +110,7 @@ def generate_bzl_content(url, data, unsupported_versions, supported_platforms):
 
         content.append('    },')
 
-    content.append('}')
+    content.append('}\n')
 
     return '\n'.join(content)
 
diff --git a/zig/private/common/filetypes.bzl b/zig/private/common/filetypes.bzl
index b581ef8c..86679de3 100644
--- a/zig/private/common/filetypes.bzl
+++ b/zig/private/common/filetypes.bzl
@@ -3,9 +3,9 @@
 ZIG_SOURCE_EXTENSIONS = [".zig"]
 
 # Based on the file-type classification in the Zig compiler
-# https://github.com/ziglang/zig/blob/0.10.1/src/Compilation.zig#L4679-L4709
+# https://github.com/ziglang/zig/blob/b57081f039bd3f8f82210e8896e336e3c3a6869b/src/Compilation.zig#L4679-L4709
 # And which of these files are treated as C sources
-# https://github.com/ziglang/zig/blob/0.10.1/src/main.zig#L1349-L1354
+# https://github.com/ziglang/zig/blob/b57081f039bd3f8f82210e8896e336e3c3a6869b/src/main.zig#L1349-L1354
 ZIG_C_SOURCE_EXTENSIONS = [
     # .assembly
     ".s",