diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 7b56e4e..517ede1 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -43,7 +43,8 @@ jobs:
         cargo --version
         cargo clippy --version
     - name: Build
-      run: cargo build --all --verbose
+      run: RUSTFLAGS="-D warnings" cargo build --all --verbose
+      shell: bash
     - name: Test
       run: cargo test --all --verbose
     - name: Clippy
diff --git a/justfile b/justfile
index f0c087b..274565c 100644
--- a/justfile
+++ b/justfile
@@ -28,7 +28,7 @@ done BRANCH=`git rev-parse --abbrev-ref HEAD`:
 	git checkout master
 	git diff --no-ext-diff --quiet --exit-code
 	git pull --rebase github master
-	git diff --no-ext-diff --quiet --exit-code {{BRANCH}}
+	git diff --no-ext-diff --quiet --exit-code {{BRANCH}} --
 	git branch -D {{BRANCH}}
 
 test: