diff --git a/lib/rt64 b/lib/rt64
index b552151..23cab60 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit b552151c3498dc45ba06e98f57aaf0fa709cdf9f
+Subproject commit 23cab603c4f9f4a8b369b38e036f1aa484603878
diff --git a/src/main/main.cpp b/src/main/main.cpp
index 983cac8..5129f4b 100644
--- a/src/main/main.cpp
+++ b/src/main/main.cpp
@@ -56,7 +56,7 @@
 
 #include "../../lib/rt64/src/contrib/stb/stb_image.h"
 
-const std::string version_string = "1.2.1";
+const std::string version_string = "1.2.2-dev";
 
 template<typename... Ts>
 void exit_error(const char* str, Ts ...args) {