diff --git a/CMakeLists.txt b/CMakeLists.txt
index b4e0a38..13d3937 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -163,6 +163,7 @@
     include/armnn/DescriptorsFwd.hpp
     include/armnn/Exceptions.hpp
     include/armnn/backends/ILayerSupport.hpp
+    include/armnn/backends/ICustomAllocator.hpp
     include/armnn/IAsyncExecutionCallback.hpp
     include/armnn/ILayerVisitor.hpp
     include/armnn/INetwork.hpp