diff --git a/extern/CMakeLists.txt b/extern/CMakeLists.txt
index 73bf1d7..0071571 100755
--- a/extern/CMakeLists.txt
+++ b/extern/CMakeLists.txt
@@ -9,13 +9,13 @@ FetchContent_Declare(
 FetchContent_Declare(
   spirv-cross
   GIT_REPOSITORY https://github.com/KhronosGroup/SPIRV-Cross.git
-  GIT_TAG 2021-01-15
+  GIT_TAG MoltenVK-1.1.5
 )
 
 FetchContent_Declare(
   glslang
   GIT_REPOSITORY https://github.com/KhronosGroup/glslang.git
-  GIT_TAG 3de5cfe50edecd001e6d703555284d9b10b3dd57 # taken from https://github.com/KhronosGroup/SPIRV-Cross/blob/2021-01-15/checkout_glslang_spirv_tools.sh#L3
+  GIT_TAG df609a01b386001e367709086c58529c48028d1e # taken from https://github.com/KhronosGroup/SPIRV-Cross/blob/2021-01-15/checkout_glslang_spirv_tools.sh#L3
 )
 
 # bullet