diff --git a/lib.go b/lib.go
index b655332..e17bf87 100644
--- a/lib.go
+++ b/lib.go
@@ -3,3 +3,7 @@ package workspace_lib
 func AddNums(a, b int) int {
 	return a + b
 }
+
+func SubNums(a, b int) int {
+	return a - b
+}