diff --git a/SuperBuild/CMake/External_gsl.cmake b/SuperBuild/CMake/External_gsl.cmake
index bb0fe55d132d3622a5b8ef4e9072460c1870f92b..3da8fab9ca410f5d948fbaea83e4a38e9895f97e 100644
--- a/SuperBuild/CMake/External_gsl.cmake
+++ b/SuperBuild/CMake/External_gsl.cmake
@@ -25,6 +25,7 @@ SETUP_SUPERBUILD(GSL)
 ExternalProject_Add(GSL
   PREFIX GSL
   URL "https://github.com/ampl/gsl/archive/v2.3.0.tar.gz"
+  DOWNLOAD_NAME gsl_v2.3.0.tar.gz
   URL_MD5 7e0478f7c5e62696fef480b9a46f708c
   BINARY_DIR ${GSL_SB_BUILD_DIR}
   INSTALL_DIR ${SB_INSTALL_PREFIX}