diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9012e8a..98fe836 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,6 +21,8 @@ jobs:
   doc:
     name: Build Doc
     runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: -D warnings
     steps:
       - uses: actions/checkout@v4
         with:
@@ -51,6 +53,8 @@ jobs:
   build:
     name: Build the project
     runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: -D warnings
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
@@ -66,6 +70,8 @@ jobs:
   test:
     name: Test Suite
     runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: -D warnings
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable