diff --git a/.github/workflows/run-yesno-recipe.yml b/.github/workflows/run-yesno-recipe.yml
index 39a6a0e80..b4e266672 100644
--- a/.github/workflows/run-yesno-recipe.yml
+++ b/.github/workflows/run-yesno-recipe.yml
@@ -56,7 +56,7 @@ 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.torch1.7.1 -f https://k2-fsa.org/nightly/
+          python3 -m pip install k2==1.7.dev20210908+cpu.torch1.7.1 -f https://k2-fsa.org/nightly/
           python3 -m pip install torchaudio==0.7.2
           python3 -m pip install git+https://github.com/lhotse-speech/lhotse
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9110e7db4..c853e3de1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,7 +32,8 @@ jobs:
         os: [ubuntu-18.04, macos-10.15]
         python-version: [3.6, 3.7, 3.8, 3.9]
         torch: ["1.8.1"]
-        k2-version: ["1.4.dev20210822"]
+        k2-version: ["1.7.dev20210908"]
+
       fail-fast: false
 
     steps: