diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 544eaac..16376b6 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -5,6 +5,6 @@
 <!--//////////////////////////////////////////////////////////-->
 
 Changes proposed in this pull request:
--
--
--
+- briefly describe change here,
+- briefly describe change here,
+- briefly describe change here.
diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
new file mode 100644
index 0000000..6908b0d
--- /dev/null
+++ b/.github/workflows/shellcheck.yml
@@ -0,0 +1,14 @@
+name: 'ShellCheck'
+
+on: [push, pull_request]
+
+jobs:
+  shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Run ShellCheck
+      uses: ludeeus/action-shellcheck@master
+      with:
+        scandir: './src'