diff --git a/experiments/student-backend/.idea/libraries/protobuf_java.xml b/experiments/student-backend/.idea/libraries/protobuf_java.xml
index 0867ac2101b..ab870777932 100644
--- a/experiments/student-backend/.idea/libraries/protobuf_java.xml
+++ b/experiments/student-backend/.idea/libraries/protobuf_java.xml
@@ -1,11 +1,11 @@
 <component name="libraryTable">
   <library name="protobuf-java">
     <CLASSES>
-      <root url="file://$PROJECT_DIR$/../kotlin-ir/dependencies/protobuf-2.6.1.jar" />
+      <root url="jar://$PROJECT_DIR$/../kotlin-ir/dependencies/protobuf-2.6.1.jar!/" />
     </CLASSES>
     <JAVADOC />
     <SOURCES>
-      <root url="file://$PROJECT_DIR$/../kotlin-ir/dependencies/protobuf-2.6.1-sources.jar" />
+      <root url="jar://$PROJECT_DIR$/../kotlin-ir/dependencies/protobuf-2.6.1-sources.jar!/" />
     </SOURCES>
   </library>
-</component>
\ No newline at end of file
+</component>