diff --git a/scripts/ExternalInterfaces/CMakeLists.txt b/scripts/ExternalInterfaces/CMakeLists.txt
index 49328e8b907c..f4bf0e14545a 100644
--- a/scripts/ExternalInterfaces/CMakeLists.txt
+++ b/scripts/ExternalInterfaces/CMakeLists.txt
@@ -7,7 +7,7 @@ externalproject_add(
   mslice
   PREFIX ${_mslice_external_root}
   GIT_REPOSITORY "https://github.com/mantidproject/mslice.git"
-  GIT_TAG 93f0b276fdb0f4bb303768ed34943e0e612f400a
+  GIT_TAG a425b853e633e0cd94397c225d08fee066e44376
   EXCLUDE_FROM_ALL 1
   CONFIGURE_COMMAND ""
   BUILD_COMMAND ""