diff --git a/.github/workflows/verify-on-macos.yml b/.github/workflows/verify-on-macos.yml
index ad7454f..7f02b6f 100644
--- a/.github/workflows/verify-on-macos.yml
+++ b/.github/workflows/verify-on-macos.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: macos-latest
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
@@ -21,7 +21,7 @@ jobs:
     runs-on: macos-latest
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
diff --git a/.github/workflows/verify-on-ubuntu.yml b/.github/workflows/verify-on-ubuntu.yml
index 98c240b..604b03f 100644
--- a/.github/workflows/verify-on-ubuntu.yml
+++ b/.github/workflows/verify-on-ubuntu.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
diff --git a/.github/workflows/verify-on-ubuntu1604.yml b/.github/workflows/verify-on-ubuntu1604.yml
index bb3ccc5..5484a13 100644
--- a/.github/workflows/verify-on-ubuntu1604.yml
+++ b/.github/workflows/verify-on-ubuntu1604.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-16.04
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-16.04
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
diff --git a/.github/workflows/verify-on-windows.yml b/.github/workflows/verify-on-windows.yml
index e76ce83..52a1a5a 100644
--- a/.github/workflows/verify-on-windows.yml
+++ b/.github/workflows/verify-on-windows.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: windows-latest
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
@@ -21,7 +21,7 @@ jobs:
     runs-on: windows-latest
     steps:
     - name: Install SSH key
-      uses: shimataro/ssh-key-action@HEAD
+      uses: shimataro/ssh-key-action@development
       with:
         private-key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional