diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala
index 9156660ec..da365174b 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala
@@ -85,6 +85,10 @@ object SbtCoursierShared extends AutoPlugin {
         val noWarningPlz = clean.value
         SbtCoursierCache.default.clear()
       },
+      onUnload := {
+        SbtCoursierCache.default.clear()
+        onUnload.value
+      },
       coursierGenerateIvyXml := true,
       coursierWriteIvyXml := IvyXmlGeneration.writeIvyXml.value,
       coursierProject := InputsTasks.coursierProjectTask.value,