diff --git a/src/main/java/com/googlesource/gerrit/modules/gitrefsfilter/ChangesTsCache.java b/src/main/java/com/googlesource/gerrit/modules/gitrefsfilter/ChangesTsCache.java
index 248d347..722d40d 100644
--- a/src/main/java/com/googlesource/gerrit/modules/gitrefsfilter/ChangesTsCache.java
+++ b/src/main/java/com/googlesource/gerrit/modules/gitrefsfilter/ChangesTsCache.java
@@ -49,7 +49,7 @@
           .createChecked(key.repo(), key.project(), key.changeId(), key.changeRevision())
           .getChange()
           .getLastUpdatedOn()
-          .getTime();
+          .toEpochMilli();
     }
   }
 }