diff --git a/.github/workflows/periodic.yml b/.github/workflows/periodic.yml
new file mode 100644
index 0000000..6559a3a
--- /dev/null
+++ b/.github/workflows/periodic.yml
@@ -0,0 +1,41 @@
+name: Periodic tests
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 0 * * SUN'
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Install toolchain
+        uses: dtolnay/rust-toolchain@nightly
+
+      - name: Use latest dependencies
+        run: cargo generate-lockfile --ignore-rust-version
+
+      - name: Test impl-tools-lib
+        run: cargo test --manifest-path lib/Cargo.toml --lib --tests
+
+      - name: Test impl-tools
+        run: cargo test --features nightly-diagnostics --lib --tests
+
+      - name: Test test-cfg
+        working-directory: tests/test-cfg
+        run: |
+          cargo test
+          cargo test --features feature1
+
+  cargo-deny:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: EmbarkStudios/cargo-deny-action@v2
+        with:
+          rust-version: "1.85.0"
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 05ee2dc..140435b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -31,15 +31,15 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
-      - name: Not MSRV
-        if: ${{ matrix.variant == 'MSRV' }}
-        run: cargo generate-lockfile --ignore-rust-version
-
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.toolchain }}
 
+      - name: Not MSRV
+        if: ${{ matrix.variant == 'MSRV' }}
+        run: cargo generate-lockfile --ignore-rust-version
+
       - name: Build docs
         if: ${{ matrix.variant == 'docs' }}
         run: cargo doc ${{ matrix.features }} --all --no-deps
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5ca117..ebbf5be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,14 @@
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-# [0.11.4] — unreleased
+# [0.12.0] — 2026-06-10
+
+-   Add cargo-deny check (#67)
+-   Bump MSRV to 1.85.0 and Edition to 2024 (#66)
+-   Switch from `proc-macro-error2` to `proc-macro-error3` since the former is now unmaintained (#66)
+-   Add `#[split_impl]` attribute (#63, #64)
+
+# [0.11.4] — 2025-09-29
 
 -   Bump MSRV to 1.70 (#59)
 -   Add feature `nightly-diagnostics` (#60)
diff --git a/Cargo.toml b/Cargo.toml
index 468fabd..82541d0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ edition = "2024"
 
 [package]
 name = "impl-tools"
-version = "0.11.4"
+version = "0.12.0"
 description = "Helper macros: autoimpl"
 keywords = ["proc-macro", "macro", "derive", "trait", "procedural"]
 categories = ["development-tools::procedural-macro-helpers"]
@@ -39,7 +39,7 @@ default-features = false
 version = "2.0.0"
 
 [dependencies.impl-tools-lib]
-version = "0.11.4"
+version = "0.12.0"
 path = "lib"
 
 [dev-dependencies]
diff --git a/deny.toml b/deny.toml
new file mode 100644
index 0000000..96b7e49
--- /dev/null
+++ b/deny.toml
@@ -0,0 +1,6 @@
+[licenses]
+allow = [
+    "MIT",
+    "Apache-2.0",
+    "Unicode-3.0",
+]
diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index 4f90414..abecc67 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "impl-tools-lib"
-version = "0.11.4"
+version = "0.12.0"
 description = "Helper macros: autoimpl"
 keywords = ["derive", "trait"]
 readme = "README.md"
diff --git a/tests/test-cfg/Cargo.toml b/tests/test-cfg/Cargo.toml
index 43e19d4..d7400d7 100644
--- a/tests/test-cfg/Cargo.toml
+++ b/tests/test-cfg/Cargo.toml
@@ -11,4 +11,4 @@ publish = false
 feature1 = []
 
 [dependencies]
-impl-tools = { version = "0.11", path = "../.." }
+impl-tools = { version = "0.12", path = "../.." }