diff --git a/.github/azure-steps.yml b/.github/azure-steps.yml
index aae08c7f3..2c955885e 100644
--- a/.github/azure-steps.yml
+++ b/.github/azure-steps.yml
@@ -45,6 +45,7 @@ steps:
 
   - script: |
       ${{ parameters.prefix }} python -m pip install -U -r requirements.txt
+      ${{ parameters.prefix }} python -m pip install mecab-ko
     displayName: "Install test requirements"
 
   - script: |