diff --git a/src/main/java/com/samskivert/depot/DepotRepository.java b/src/main/java/com/samskivert/depot/DepotRepository.java
index 6dd4e16..d6359d4 100644
--- a/src/main/java/com/samskivert/depot/DepotRepository.java
+++ b/src/main/java/com/samskivert/depot/DepotRepository.java
@@ -388,6 +388,10 @@ public abstract class DepotRepository
                 }
                 return mods;
             }
+            @Override
+            public void updateStats (Stats stats) {
+                stats.noteModification(pClass);
+            }
         });
     }
 
@@ -639,6 +643,10 @@ public abstract class DepotRepository
                 created[0] = true;
                 return mods;
             }
+            @Override
+            public void updateStats (Stats stats) {
+                stats.noteModification(pClass);
+            }
         });
         return created[0];
     }
@@ -706,7 +714,7 @@ public abstract class DepotRepository
      * @throws DatabaseException if any problem is encountered communicating with the database.
      */
     public <T extends PersistentRecord> int deleteAll (
-        Class<T> type, final WhereClause where, CacheInvalidator invalidator)
+        final Class<T> type, final WhereClause where, CacheInvalidator invalidator)
         throws DatabaseException
     {
         if (invalidator instanceof ValidatingCacheInvalidator) {
@@ -723,6 +731,10 @@ public abstract class DepotRepository
             protected int invoke (Connection conn, DatabaseLiaison liaison) throws SQLException {
                 return builder.prepare(conn).executeUpdate();
             }
+            @Override
+            public void updateStats (Stats stats) {
+                stats.noteModification(type);
+            }
         });
     }
 
@@ -827,7 +839,7 @@ public abstract class DepotRepository
     /**
      * A helper method for the various partial update methods.
      */
-    protected int doUpdate (CacheInvalidator invalidator, UpdateClause update)
+    protected int doUpdate (CacheInvalidator invalidator, final UpdateClause update)
     {
         final SQLBuilder builder = _ctx.getSQLBuilder(DepotTypes.getDepotTypes(_ctx, update));
         builder.newQuery(update);
@@ -836,6 +848,10 @@ public abstract class DepotRepository
             protected int invoke (Connection conn, DatabaseLiaison liaison) throws SQLException {
                 return builder.prepare(conn).executeUpdate();
             }
+            @Override
+            public void updateStats (Stats stats) {
+                stats.noteModification(update.getPersistentClass());
+            }
         });
     }
 
diff --git a/src/main/java/com/samskivert/depot/Stats.java b/src/main/java/com/samskivert/depot/Stats.java
index 5119bec..06af524 100644
--- a/src/main/java/com/samskivert/depot/Stats.java
+++ b/src/main/java/com/samskivert/depot/Stats.java
@@ -120,8 +120,9 @@ public class Stats
         }
     }
 
-    public synchronized void noteQuery (int cachedQueries, int uncachedQueries, int explicitQueries,
-                                        int cachedRecords, int uncachedRecords)
+    public synchronized void noteQuery (
+        Class<? extends PersistentRecord> type, int cachedQueries, int uncachedQueries,
+        int explicitQueries, int cachedRecords, int uncachedRecords)
     {
         _cachedQueries += cachedQueries;
         _uncachedQueries += uncachedQueries;
@@ -130,6 +131,11 @@ public class Stats
         _uncachedRecords += uncachedRecords;
     }
 
+    public synchronized void noteModification (Class<? extends PersistentRecord> type)
+    {
+        // nothing by default
+    }
+
     protected int _totalOps;
     protected long _connectionWaitTime;
 
diff --git a/src/main/java/com/samskivert/depot/impl/FindAllKeysQuery.java b/src/main/java/com/samskivert/depot/impl/FindAllKeysQuery.java
index 4d59b1b..1444425 100644
--- a/src/main/java/com/samskivert/depot/impl/FindAllKeysQuery.java
+++ b/src/main/java/com/samskivert/depot/impl/FindAllKeysQuery.java
@@ -88,7 +88,7 @@ public class FindAllKeysQuery<T extends PersistentRecord> extends Fetcher<List<K
     // from Fetcher
     public void updateStats (Stats stats)
     {
-        stats.noteQuery(0, 1, 0, 0, 0); // one uncached query
+        stats.noteQuery(_marsh.getPersistentClass(), 0, 1, 0, 0, 0); // one uncached query
     }
 
     protected boolean _forUpdate;
diff --git a/src/main/java/com/samskivert/depot/impl/FindAllQuery.java b/src/main/java/com/samskivert/depot/impl/FindAllQuery.java
index 9551711..dad5391 100644
--- a/src/main/java/com/samskivert/depot/impl/FindAllQuery.java
+++ b/src/main/java/com/samskivert/depot/impl/FindAllQuery.java
@@ -348,7 +348,7 @@ public abstract class FindAllQuery<T extends PersistentRecord,R>
     // from Fetcher
     public void updateStats (Stats stats)
     {
-        stats.noteQuery(_cachedQueries, _uncachedQueries, _explicitQueries,
+        stats.noteQuery(_type, _cachedQueries, _uncachedQueries, _explicitQueries,
                         _cachedRecords, _uncachedRecords);
     }
 
diff --git a/src/main/java/com/samskivert/depot/impl/FindOneQuery.java b/src/main/java/com/samskivert/depot/impl/FindOneQuery.java
index 41187d3..3dc6443 100644
--- a/src/main/java/com/samskivert/depot/impl/FindOneQuery.java
+++ b/src/main/java/com/samskivert/depot/impl/FindOneQuery.java
@@ -112,7 +112,7 @@ public class FindOneQuery<T extends PersistentRecord> extends Fetcher<T>
     // from Operation
     public void updateStats (Stats stats)
     {
-        stats.noteQuery(0, 0, 0, _cachedRecords, 1-_cachedRecords);
+        stats.noteQuery(_marsh.getPersistentClass(), 0, 0, 0, _cachedRecords, 1-_cachedRecords);
     }
 
     protected CacheKey getCacheKey ()
diff --git a/src/main/java/com/samskivert/depot/impl/Modifier.java b/src/main/java/com/samskivert/depot/impl/Modifier.java
index d44a267..ffdbbcb 100644
--- a/src/main/java/com/samskivert/depot/impl/Modifier.java
+++ b/src/main/java/com/samskivert/depot/impl/Modifier.java
@@ -144,7 +144,7 @@ public abstract class Modifier
     // from interface Operation
     public void updateStats (Stats stats)
     {
-        // nothing to update for modifiers
+        // nothing to update by default
     }
 
     /**