diff --git a/settings/repository/org.broad/tribble-21.jar b/settings/repository/org.broad/tribble-18.jar
similarity index 88%
rename from settings/repository/org.broad/tribble-21.jar
rename to settings/repository/org.broad/tribble-18.jar
index 2cb96f93d..1ea101dd0 100644
Binary files a/settings/repository/org.broad/tribble-21.jar and b/settings/repository/org.broad/tribble-18.jar differ
diff --git a/settings/repository/org.broad/tribble-21.xml b/settings/repository/org.broad/tribble-18.xml
similarity index 51%
rename from settings/repository/org.broad/tribble-21.xml
rename to settings/repository/org.broad/tribble-18.xml
index cd93af1b0..d2648ddad 100644
--- a/settings/repository/org.broad/tribble-21.xml
+++ b/settings/repository/org.broad/tribble-18.xml
@@ -1,3 +1,3 @@
 <ivy-module version="1.0">
-    <info organisation="org.broad" module="tribble" revision="21" status="integration" />
+    <info organisation="org.broad" module="tribble" revision="18" status="integration" />
 </ivy-module>