diff --git a/scripts/ExternalInterfaces/CMakeLists.txt b/scripts/ExternalInterfaces/CMakeLists.txt
index 89e7ec8cffb18c8dcc8b69975777d2bffc4bdf42..487df63307b067d397d75f86d3d607a5953d2c36 100644
--- a/scripts/ExternalInterfaces/CMakeLists.txt
+++ b/scripts/ExternalInterfaces/CMakeLists.txt
@@ -8,7 +8,7 @@ externalproject_add(mslice
                     GIT_REPOSITORY
                     "https://github.com/mantidproject/mslice.git"
                     GIT_TAG
-                    98510b984f4efd0e8fbadac60d813e825aad01ae
+                    186173f5b6f14bf43b708a662e7c5544cfcbf2ea
                     EXCLUDE_FROM_ALL 1
                     CONFIGURE_COMMAND ""
                     BUILD_COMMAND ""