diff --git a/pom.xml b/pom.xml
index 7524ce7cd..fa0f3426d 100755
--- a/pom.xml
+++ b/pom.xml
@@ -47,7 +47,7 @@
                 <groupId>net.openhft</groupId>
                 <artifactId>chronicle-bom</artifactId>
                 <type>pom</type>
-                <version>1.7.11-SNAPSHOT</version>
+                <version>1.8.11-SNAPSHOT</version>
                 <scope>import</scope>
             </dependency>
 
diff --git a/src/main/java/net/openhft/chronicle/map/impl/stage/data/ZeroRandomDataInput.java b/src/main/java/net/openhft/chronicle/map/impl/stage/data/ZeroRandomDataInput.java
index 20823d607..011693fb6 100644
--- a/src/main/java/net/openhft/chronicle/map/impl/stage/data/ZeroRandomDataInput.java
+++ b/src/main/java/net/openhft/chronicle/map/impl/stage/data/ZeroRandomDataInput.java
@@ -17,9 +17,12 @@
 package net.openhft.chronicle.map.impl.stage.data;
 
 import net.openhft.chronicle.bytes.Bytes;
+import net.openhft.chronicle.bytes.IORuntimeException;
 import net.openhft.chronicle.bytes.RandomDataInput;
 import net.openhft.chronicle.core.OS;
 
+import java.nio.BufferOverflowException;
+
 public enum ZeroRandomDataInput implements RandomDataInput {
     INSTANCE;
 
@@ -83,6 +86,18 @@ public enum ZeroRandomDataInput implements RandomDataInput {
         throw new UnsupportedOperationException();
     }
 
+    @Override
+    public boolean compareAndSwapInt(long offset, int expected, int value)
+            throws BufferOverflowException, IllegalArgumentException, IORuntimeException {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean compareAndSwapLong(long offset, long expected, long value)
+            throws BufferOverflowException, IllegalArgumentException, IORuntimeException {
+        throw new UnsupportedOperationException();
+    }
+
     @Override
     public void reserve() throws IllegalStateException {
     }