diff --git a/requirements.txt b/requirements.txt
index 0762ac5..022b9be 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ pygame
 pyscroll
 pytmx
 thorpy
-pymunk
+pymunk>=5.4.1; sys_platform != 'win32'
+pymunk==5.4.0; sys_platform == 'win32'
\ No newline at end of file