diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 543e3f9e6..42bedf688 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -21,7 +21,7 @@ jobs:
     env:
       DYLD_FRAMEWORK_PATH: /Users/runner/work/sixtyfps/Qt/5.15.2/clang_64/lib
       QT_QPA_PLATFORM: offscreen
-      RUSTFLAGS: -D warnings
+      RUSTFLAGS: -D warnings -W deprecated
     strategy:
       matrix:
         os: [ubuntu-20.04, macos-latest, windows-latest]
@@ -148,7 +148,7 @@ jobs:
     env:
       DYLD_FRAMEWORK_PATH: /Users/runner/work/sixtyfps/Qt/5.15.2/clang_64/lib
       QT_QPA_PLATFORM: offscreen
-      RUSTFLAGS: -D warnings
+      RUSTFLAGS: -D warnings -W deprecated
     strategy:
       matrix:
         os: [ubuntu-20.04, macos-latest, windows-latest]
@@ -302,8 +302,8 @@ jobs:
     env:
       # allow deprecated warning because we are using nightly and some things might be deprecated in nightly
       # for which the stable alternative is not yet available
-      RUSTFLAGS: -A deprecated -D warnings
-      RUSTDOCFLAGS: --html-in-header=/home/runner/work/sixtyfps/sixtyfps/api/sixtyfps-rs/sixtyfps-docs-integration.html -D warnings -A deprecated
+      RUSTFLAGS: -D warnings -W deprecated
+      RUSTDOCFLAGS: --html-in-header=/home/runner/work/sixtyfps/sixtyfps/api/sixtyfps-rs/sixtyfps-docs-integration.html -D warnings -W deprecated
       SIXTYFPS_NO_QT: 1
     steps:
     - uses: actions/checkout@v2