diff --git a/cmake/Modules/Packages/MSCG.cmake b/cmake/Modules/Packages/MSCG.cmake
index e4260e059e..2b8e8eda06 100644
--- a/cmake/Modules/Packages/MSCG.cmake
+++ b/cmake/Modules/Packages/MSCG.cmake
@@ -7,8 +7,8 @@ else()
 endif()
 option(DOWNLOAD_MSCG "Download MSCG library instead of using an already installed one)" ${DOWNLOAD_MSCG_DEFAULT})
 if(DOWNLOAD_MSCG)
-  set(MSCG_URL "https://github.com/uchicago-voth/MSCG-release/archive/1.7.3.1.tar.gz" CACHE STRING "URL for MSCG tarball")
-  set(MSCG_MD5 "8c45e269ee13f60b303edd7823866a91" CACHE STRING "MD5 checksum of MSCG tarball")
+  set(MSCG_URL "https://github.com/uchicago-voth/MSCG-release/archive/491270a73539e3f6951e76f7dbe84e258b3ebb45.tar.gz" CACHE STRING "URL for MSCG tarball")
+  set(MSCG_MD5 "7ea50748fba5c3a372e0266bd31d2f11" CACHE STRING "MD5 checksum of MSCG tarball")
   mark_as_advanced(MSCG_URL)
   mark_as_advanced(MSCG_MD5)