diff --git a/action.go b/action.go
index 1710a78..0c8619d 100644
--- a/action.go
+++ b/action.go
@@ -17,7 +17,7 @@ const (
 
 	// https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#multiline-strings
 	multiLineFileDelim = "234baa68-d26f-4bf9-996d-45ec3520cb95"
-	multilineFileCmd   = "%s<<" + multiLineFileDelim + "\n%s\n" + multiLineFileDelim // ${name}<<${delimiter}${os.EOL}${convertedVal}${os.EOL}${delimiter}
+	multilineFileCmd   = "%s<<" + multiLineFileDelim + "\n%s\n" + multiLineFileDelim + "\n" // ${name}<<${delimiter}${os.EOL}${convertedVal}${os.EOL}${delimiter}${os.EOL}
 
 	addMatcherCmd    = "add-matcher"
 	removeMatcherCmd = "remove-matcher"
diff --git a/action_test.go b/action_test.go
index df835ef..a8013e5 100644
--- a/action_test.go
+++ b/action_test.go
@@ -322,8 +322,8 @@ func TestAction_SaveState(t *testing.T) {
 		t.Errorf("unable to read temp env file: %s", err)
 	}
 
-	want := fmt.Sprintf("key<<%s\nvalue\n%s", multiLineFileDelim, multiLineFileDelim)
-	want += fmt.Sprintf("key2<<%s\nvalue2\n%s", multiLineFileDelim, multiLineFileDelim)
+	want := fmt.Sprintf("key<<%s\nvalue\n%s\n", multiLineFileDelim, multiLineFileDelim)
+	want += fmt.Sprintf("key2<<%s\nvalue2\n%s\n", multiLineFileDelim, multiLineFileDelim)
 	if got := string(data); got != want {
 		t.Errorf("expected %q to be %q", got, want)
 	}
@@ -399,8 +399,8 @@ func TestAction_SetEnv(t *testing.T) {
 		t.Errorf("unable to read temp env file: %s", err)
 	}
 
-	want := fmt.Sprintf("key<<%s\nvalue\n%s", multiLineFileDelim, multiLineFileDelim)
-	want += fmt.Sprintf("key2<<%s\nvalue2\n%s", multiLineFileDelim, multiLineFileDelim)
+	want := fmt.Sprintf("key<<%s\nvalue\n%s\n", multiLineFileDelim, multiLineFileDelim)
+	want += fmt.Sprintf("key2<<%s\nvalue2\n%s\n", multiLineFileDelim, multiLineFileDelim)
 	if got := string(data); got != want {
 		t.Errorf("expected %q to be %q", got, want)
 	}
@@ -435,8 +435,8 @@ func TestAction_SetOutput(t *testing.T) {
 		t.Errorf("unable to read temp env file: %s", err)
 	}
 
-	want := fmt.Sprintf("key<<%s\nvalue\n%s", multiLineFileDelim, multiLineFileDelim)
-	want += fmt.Sprintf("key2<<%s\nvalue2\n%s", multiLineFileDelim, multiLineFileDelim)
+	want := fmt.Sprintf("key<<%s\nvalue\n%s\n", multiLineFileDelim, multiLineFileDelim)
+	want += fmt.Sprintf("key2<<%s\nvalue2\n%s\n", multiLineFileDelim, multiLineFileDelim)
 	if got := string(data); got != want {
 		t.Errorf("expected %q to be %q", got, want)
 	}