diff --git a/.idea/rust-template.iml b/.idea/rust-template.iml
index cf84ae4..bbe0a70 100644
--- a/.idea/rust-template.iml
+++ b/.idea/rust-template.iml
@@ -3,6 +3,7 @@
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/tests" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/target" />
     </content>
     <orderEntry type="inheritedJdk" />