diff --git a/library/src/uk/co/senab/bitmapcache/BitmapLruCache.java b/library/src/uk/co/senab/bitmapcache/BitmapLruCache.java
index f651a3b..e2950df 100644
--- a/library/src/uk/co/senab/bitmapcache/BitmapLruCache.java
+++ b/library/src/uk/co/senab/bitmapcache/BitmapLruCache.java
@@ -563,6 +563,12 @@ public void trimMemory() {
         }
     }
 
+    public void purgeMemoryCache() {
+        if (null != mMemoryCache) {
+            mMemoryCache.evictAll();
+        }
+    }
+
     synchronized void setDiskCache(DiskLruCache diskCache) {
         mDiskCache = diskCache;