diff --git a/src/me/ryanhamshire/GriefPrevention/DataStore.java b/src/me/ryanhamshire/GriefPrevention/DataStore.java
index ba76edc..5cc5060 100644
--- a/src/me/ryanhamshire/GriefPrevention/DataStore.java
+++ b/src/me/ryanhamshire/GriefPrevention/DataStore.java
@@ -109,6 +109,12 @@ public abstract class DataStore
                 this.saveClaim(claim);
             }
             
+            //clean up any UUID conversion work
+            if(UUIDFetcher.lookupCache != null)
+            {
+                UUIDFetcher.lookupCache.clear();
+            }
+            
             GriefPrevention.AddLogEntry("Update finished.");
         }
 		
diff --git a/src/me/ryanhamshire/GriefPrevention/UUIDFetcher.java b/src/me/ryanhamshire/GriefPrevention/UUIDFetcher.java
index f027fb5..dfe5477 100644
--- a/src/me/ryanhamshire/GriefPrevention/UUIDFetcher.java
+++ b/src/me/ryanhamshire/GriefPrevention/UUIDFetcher.java
@@ -26,7 +26,7 @@ class UUIDFetcher {
     private final boolean rateLimiting;
     
     //cache for username -> uuid lookups
-    private static HashMap<String, UUID> lookupCache;
+    static HashMap<String, UUID> lookupCache;
  
     public UUIDFetcher(List<String> names, boolean rateLimiting) {
         this.names = names;