diff --git a/.github/workflows/run-yesno-recipe.yml b/.github/workflows/run-yesno-recipe.yml
index 0469d0912..d58500716 100644
--- a/.github/workflows/run-yesno-recipe.yml
+++ b/.github/workflows/run-yesno-recipe.yml
@@ -47,7 +47,7 @@ jobs:
         run: |
           python3 -m pip install --upgrade pip black flake8
           python3 -m pip install -U pip
-          python3 -m pip install k2=1.4.dev20210822+cpu.torch1.9.0 -f https://k2-fsa.org/nightly/
+          python3 -m pip install k2==1.4.dev20210822+cpu.torch1.9.0 -f https://k2-fsa.org/nightly/
           python3 -m pip install torchaudio==0.9.0
           python3 -m pip install git+https://github.com/lhotse-speech/lhotse
           git clone