diff --git a/appveyor.yml b/appveyor.yml
index 6b9e429f3..94e6fc3a0 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -39,8 +39,9 @@ skip_commits:
 max_jobs: 1
 
 # scripts that run after cloning repository
-#install:
-#  - ps: cd C:\projects
+install:
+  - cmd: cd C:\projects\thyme
+  - cmd: git submodule update --init --recursive
 
 # scripts to run before build
 before_build:
diff --git a/src/libs/gamemath b/src/libs/gamemath
index 6d98cd4f5..ef58e7b44 160000
--- a/src/libs/gamemath
+++ b/src/libs/gamemath
@@ -1 +1 @@
-Subproject commit 6d98cd4f5c248f51a646f8426756fcc75f905915
+Subproject commit ef58e7b44dbe0982db2cc6fdde52023a3020b1d3