diff --git a/oj-spring-boot/.gitignore b/oj-spring-boot/.gitignore
index 549e00a..ee6e957 100644
--- a/oj-spring-boot/.gitignore
+++ b/oj-spring-boot/.gitignore
@@ -14,7 +14,7 @@ target/
 .sts4-cache
 
 ### IntelliJ IDEA ###
-.idea
+.idea/
 *.iws
 *.iml
 *.ipr