diff --git a/zxingorg/src/main/java/com/google/zxing/web/DecodeServlet.java b/zxingorg/src/main/java/com/google/zxing/web/DecodeServlet.java
index 6c2abeb90..2aceeba6b 100644
--- a/zxingorg/src/main/java/com/google/zxing/web/DecodeServlet.java
+++ b/zxingorg/src/main/java/com/google/zxing/web/DecodeServlet.java
@@ -83,7 +83,7 @@ import javax.servlet.http.Part;
 @MultipartConfig(
     maxFileSize = 1L << 26, // ~64MB
     maxRequestSize = 1L << 26, // ~64MB
-    fileSizeThreshold = 1 << 20, // ~1MB
+    fileSizeThreshold = 1 << 23, // ~8MB
     location = "/tmp")
 @WebServlet(value = "/w/decode", loadOnStartup = 1)
 public final class DecodeServlet extends HttpServlet {
diff --git a/zxingorg/src/main/java/com/google/zxing/web/DoSFilter.java b/zxingorg/src/main/java/com/google/zxing/web/DoSFilter.java
index 4d2c97914..e532d3905 100644
--- a/zxingorg/src/main/java/com/google/zxing/web/DoSFilter.java
+++ b/zxingorg/src/main/java/com/google/zxing/web/DoSFilter.java
@@ -82,6 +82,13 @@ public final class DoSFilter implements Filter {
             bannedIPAddresses.clear();
           }
         }, 0L, TimeUnit.MILLISECONDS.convert(15, TimeUnit.MINUTES));
+    timer.scheduleAtFixedRate(
+        new TimerTask() {
+          @Override
+          public void run() {
+            System.gc();
+          }
+        }, 0L, TimeUnit.MILLISECONDS.convert(15, TimeUnit.MINUTES));
   }
 
   @Override