diff --git a/.github/workflows/verify-on-linux.yml b/.github/workflows/verify-on-ubuntu.yml
similarity index 98%
rename from .github/workflows/verify-on-linux.yml
rename to .github/workflows/verify-on-ubuntu.yml
index 14b326d..23277b9 100644
--- a/.github/workflows/verify-on-linux.yml
+++ b/.github/workflows/verify-on-ubuntu.yml
@@ -1,7 +1,7 @@
 # https://help.github.com/en/articles/workflow-syntax-for-github-actions
 
 on: push
-name: Linux
+name: Ubuntu
 jobs:
   ssh:
     name: Connect to github.com
diff --git a/.github/workflows/verify-on-ubuntu1604.yml b/.github/workflows/verify-on-ubuntu1604.yml
new file mode 100644
index 0000000..d859300
--- /dev/null
+++ b/.github/workflows/verify-on-ubuntu1604.yml
@@ -0,0 +1,39 @@
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+
+on: push
+name: Ubuntu 16.04
+jobs:
+  ssh:
+    name: Connect to github.com
+    runs-on: ubuntu-16.04
+    steps:
+    - name: Install SSH key
+      uses: shimataro/ssh-key-action@HEAD
+      with:
+        private-key: ${{ secrets.SSH_KEY }}
+        public-key: ${{ secrets.SSH_KEY_PUBLIC }}
+        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone git@github.com:shimataro/ssh-key-action.git tmp
+  ssh-with-name:
+    name: Connect to github.com with name and config
+    runs-on: ubuntu-16.04
+    steps:
+    - name: Install SSH key
+      uses: shimataro/ssh-key-action@HEAD
+      with:
+        private-key: ${{ secrets.SSH_KEY }}
+        public-key: ${{ secrets.SSH_KEY_PUBLIC }}
+        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        name: ssh_key_name # optional
+        config: | # optional
+          Host github
+            Hostname github.com
+            User git
+            IdentityFile ~/.ssh/ssh_key_name
+    - name: print created files
+      run: ls -l ~/.ssh
+    - name: git clone through SSH
+      run: git clone github:shimataro/ssh-key-action.git tmp
diff --git a/.github/workflows/verify.yml.bak b/.github/workflows/verify.yml.bak
index 666e745..3088b2c 100644
--- a/.github/workflows/verify.yml.bak
+++ b/.github/workflows/verify.yml.bak
@@ -11,6 +11,7 @@ jobs:
         os:
         - Windows-latest
         - macOS-latest
+        - Ubuntu-16.04
         - Ubuntu-latest
       fail-fast: false
     steps:
diff --git a/README.md b/README.md
index 97b783c..b61f4c0 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@
 [![Build][image-build]][link-build]
 [![Windows][image-verify-windows]][link-verify-windows]
 [![macOS][image-verify-macos]][link-verify-macos]
-[![Linux][image-verify-linux]][link-verify-linux]
+[![Ubuntu][image-verify-ubuntu]][link-verify-ubuntu]
+[![Ubuntu 16.04][image-verify-ubuntu1604]][link-verify-ubuntu1604]
 [![Release][image-release]][link-release]
 [![License][image-license]][link-license]
 
@@ -11,6 +12,8 @@ This action installs SSH key into `~/.ssh`.
 
 Useful for SCP, SFTP, and `rsync` over SSH in deployment script.
 
+**Works on all [virtual environment](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/virtual-environments-for-github-hosted-runners#supported-runners-and-hardware-resources) -- Windows, macOS, Ubuntu and Ubuntu 16.04.**
+
 ## Usage
 
 Add your SSH key to your product secrets by clicking `Settings` - `Secrets` - `Add a new secret` beforehand.
@@ -87,10 +90,12 @@ See [CHANGELOG.md](CHANGELOG.md).
 [link-build]: https://github.com/shimataro/ssh-key-action
 [image-verify-windows]: https://github.com/shimataro/ssh-key-action/workflows/Windows/badge.svg
 [image-verify-macos]: https://github.com/shimataro/ssh-key-action/workflows/macOS/badge.svg
-[image-verify-linux]: https://github.com/shimataro/ssh-key-action/workflows/Linux/badge.svg
+[image-verify-ubuntu]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu/badge.svg
+[image-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu%2016.04/badge.svg
 [link-verify-windows]: https://github.com/shimataro/ssh-key-action
 [link-verify-macos]: https://github.com/shimataro/ssh-key-action
-[link-verify-linux]: https://github.com/shimataro/ssh-key-action
+[link-verify-ubuntu]: https://github.com/shimataro/ssh-key-action
+[link-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action
 [image-release]: https://img.shields.io/github/release/shimataro/ssh-key-action.svg
 [link-release]: https://github.com/shimataro/ssh-key-action/releases
 [image-license]: https://img.shields.io/github/license/shimataro/ssh-key-action.svg