diff --git a/.ci/check-newline.sh b/.ci/check-newline.sh
new file mode 100755
index 000000000..2e23cb583
--- /dev/null
+++ b/.ci/check-newline.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+set -e -u -o pipefail
+
+ret=0
+show=0
+# Reference: https://medium.com/@alexey.inkin/how-to-force-newline-at-end-of-files-and-why-you-should-do-it-fdf76d1d090e
+while IFS= read -rd '' f; do
+    if file --mime-encoding "$f" | grep -qv binary; then
+        tail -c1 < "$f" | read -r _ || show=1
+        if [ $show -eq 1 ]; then
+            echo "Warning: No newline at end of file $f"
+            ret=1
+            show=0
+        fi
+    fi
+done < <(git ls-files -z src tests/arch-test-target)
+
+exit $ret
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4a0fe4132..a3a2e1a17 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -37,5 +37,6 @@ jobs:
     - name: coding convention
       run: |
             sudo apt-get install -q -y clang-format-14
-            sh .ci/check-format.sh
+            .ci/check-newline.sh
+            .ci/check-format.sh
       shell: bash
diff --git a/scripts/debug.py b/scripts/debug.py
index 3e194d8bc..1562644ba 100755
--- a/scripts/debug.py
+++ b/scripts/debug.py
@@ -80,4 +80,4 @@ def main(argv):
         print("ERROR: qtest is not exist")
         exit(1)
 
-    main(args)
\ No newline at end of file
+    main(args)
diff --git a/scripts/kirby.raw b/scripts/kirby.raw
index cea44ef75..2de3e6a77 100644
--- a/scripts/kirby.raw
+++ b/scripts/kirby.raw
@@ -22,4 +22,4 @@
                  ⎺⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽                            
                    ⎺⎽⎽⎽⎽⎽⎽⎽⎽⎽⎽⎺                            
                       ⎽⎼⎽⎽⎽⎽⎽⎺                             
-[?25h
\ No newline at end of file
+[?25h
diff --git a/traces/trace-03-ops.cmd b/traces/trace-03-ops.cmd
index 21aecc82c..86063bc60 100644
--- a/traces/trace-03-ops.cmd
+++ b/traces/trace-03-ops.cmd
@@ -21,4 +21,4 @@ reverse
 rh z
 rh r
 rh r
-rh n
\ No newline at end of file
+rh n
diff --git a/traces/trace-06-ops.cmd b/traces/trace-06-ops.cmd
index a9677864f..d8ba9358d 100644
--- a/traces/trace-06-ops.cmd
+++ b/traces/trace-06-ops.cmd
@@ -34,4 +34,4 @@ rh a
 rh b
 rh c
 rh a
-rh a
\ No newline at end of file
+rh a