diff --git a/.github/workflows/tag.yml b/.github/workflows/tag.yml
new file mode 100644
index 0000000..d3ce8ab
--- /dev/null
+++ b/.github/workflows/tag.yml
@@ -0,0 +1,31 @@
+name: Tag latest version
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main ]
+
+concurrency: tag
+
+jobs:
+  tag-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: cachix/install-nix-action@master
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Read version
+        run: |
+          echo -n "_version=v" >> "$GITHUB_ENV"
+          nix run nixpkgs#fq -- -r ".package.version" Cargo.toml >> "$GITHUB_ENV"
+          cat "$GITHUB_ENV"
+
+      - name: Tag
+        run: |
+          set -x
+          git tag $version
+          git push --tags || :
diff --git a/Cargo.lock b/Cargo.lock
index fe88725..2eaaf07 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -617,7 +617,7 @@ checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
 [[package]]
 name = "eris"
-version = "0.1.0"
+version = "1.0.0"
 dependencies = [
  "actix-web",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index 7efec6b..42cc24b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "eris"
-version = "0.1.0"
+version = "1.0.0"
 edition = "2024"
 
 [dependencies]