diff --git a/sbt/src/sbt-test/dependency-management/cache-classifiers/test b/sbt/src/sbt-test/dependency-management/cache-classifiers/test
index f3e1d1300..25ac3f608 100644
--- a/sbt/src/sbt-test/dependency-management/cache-classifiers/test
+++ b/sbt/src/sbt-test/dependency-management/cache-classifiers/test
@@ -4,6 +4,9 @@ $ copy-file changes/B.scala b/B.scala
 > b/update
 -> b/test:compile
 
+# Need to sleep 3s because the check depends on last modified time and typical resolution is 1s.
+$ sleep 3000
+
 $ copy-file changes/A.scala a/src/test/scala/A.scala
 > a/publish