diff --git a/known_good.json b/known_good.json
index 4e59cd34..ea3a8085 100644
--- a/known_good.json
+++ b/known_good.json
@@ -5,14 +5,14 @@
       "site" : "github",
       "subrepo" : "KhronosGroup/SPIRV-Tools",
       "subdir" : "External/spirv-tools",
-      "commit" : "99cd25c4139e0dc914ab8a5a3b75e6fed0ad1329"
+      "commit" : "1a9061a2be884eed0e518ac19866246a5c9babc0"
     },
     {
       "name" : "spirv-tools/external/spirv-headers",
       "site" : "github",
       "subrepo" : "KhronosGroup/SPIRV-Headers",
       "subdir" : "External/spirv-tools/external/spirv-headers",
-      "commit" : "2bb92e6fe2c6aa410152fc6c63443f452acb1a65"
+      "commit" : "061097878467b8e040fbf153a837d844ef9f9f96"
     }
   ]
 }