diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index ef3733f..d3c8af3 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -39,9 +39,7 @@ jobs:
           toolchain: ${{ matrix.toolchain }}
           components: clippy
       - name: cargo clippy
-        uses: actions-rs/clippy-check@v1
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+        run: cargo clippy -- -D warnings
   doc:
     runs-on: ubuntu-latest
     name: nightly / doc
diff --git a/.github/workflows/nostd.yml b/.github/workflows/nostd.yml
index b2e711c..f4d5c20 100644
--- a/.github/workflows/nostd.yml
+++ b/.github/workflows/nostd.yml
@@ -22,3 +22,5 @@ jobs:
         run: rustup target add ${{ matrix.target }}
       - name: cargo check
         run: cargo check --target ${{ matrix.target }} --no-default-features
+        env:
+          RUSTFLAGS: "-Dwarnings"
diff --git a/.github/workflows/safety.yml b/.github/workflows/safety.yml
index 9b0f828..627a7d4 100644
--- a/.github/workflows/safety.yml
+++ b/.github/workflows/safety.yml
@@ -28,15 +28,24 @@ jobs:
         run: cargo test --lib --tests --all-features --target x86_64-unknown-linux-gnu
         env:
           ASAN_OPTIONS: "detect_odr_violation=0:detect_leaks=0"
-          RUSTFLAGS: "--cfg NO_UI_TESTS --cfg NO_ALLOC_FAIL_TESTS -Z sanitizer=address"
+          RUSTFLAGS: "--cfg NO_UI_TESTS --cfg NO_ALLOC_FAIL_TESTS -Z sanitizer=address -Dwarnings"
       - name: cargo test -Zsanitizer=leak
         if: always()
         run: cargo test --all-features --target x86_64-unknown-linux-gnu
         env:
           LSAN_OPTIONS: "suppressions=lsan-suppressions.txt"
-          RUSTFLAGS: "--cfg NO_UI_TESTS --cfg NO_ALLOC_FAIL_TESTS -Z sanitizer=leak"
+          RUSTFLAGS: "--cfg NO_UI_TESTS --cfg NO_ALLOC_FAIL_TESTS -Z sanitizer=leak -Dwarnings"
   miri:
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        flags: [
+          "",
+          "-Zmiri-tree-borrows",
+          "-Zmiri-strict-provenance",
+          "-Zmiri-tree-borrows -Zmiri-strict-provenance"
+        ]
     steps:
       - uses: actions/checkout@v4
         with:
@@ -48,10 +57,11 @@ jobs:
         with:
           toolchain: ${{ env.NIGHTLY }}
           components: miri
-      - name: cargo miri test
+      - name: ${{ matrix.flags }} cargo miri test
         run: cargo miri test
         env:
-          MIRIFLAGS: ""
+          RUSTFLAGS: "-Dwarnings"
+          MIRIFLAGS: ${{ matrix.flags }}
 # loom:
 #   runs-on: ubuntu-latest
 #   steps:
diff --git a/.github/workflows/scheduled.yml b/.github/workflows/scheduled.yml
index e541996..605ab57 100644
--- a/.github/workflows/scheduled.yml
+++ b/.github/workflows/scheduled.yml
@@ -27,6 +27,8 @@ jobs:
         run: cargo generate-lockfile
       - name: cargo test --locked
         run: cargo test --locked --all-features --all-targets
+        env:
+          RUSTFLAGS: "-Dwarnings"
   # https://twitter.com/alcuadrado/status/1571291687837732873
   update:
     runs-on: ubuntu-latest
@@ -46,4 +48,4 @@ jobs:
       - name: cargo test
         run: cargo test --locked --all-features --all-targets
         env:
-          RUSTFLAGS: -D deprecated
+          RUSTFLAGS: -Ddeprecated -Dwarnings
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5ab465f..052a48f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -29,9 +29,13 @@ jobs:
       # https://twitter.com/jonhoo/status/1571290371124260865
       - name: cargo test --locked
         run: cargo test --locked --all-features --all-targets
+        env:
+          RUSTFLAGS: "-Dwarnings"
       # https://github.com/rust-lang/cargo/issues/6669
       - name: cargo test --doc
         run: cargo test --locked --all-features --doc
+        env:
+          RUSTFLAGS: "-Dwarnings"
   os-check:
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} / nightly
@@ -53,4 +57,6 @@ jobs:
         if: hashFiles('Cargo.lock') == ''
         run: cargo generate-lockfile
       - name: cargo test
-        run: cargo test --locked --all-features --all-targets
+        run: cargo test --locked --all-features --all-targets 
+        env:
+          RUSTFLAGS: "-Dwarnings"