diff --git a/requirements.txt b/requirements.txt
index 33f38cca7..4355f207e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,4 +11,4 @@ pycparser
 clr-loader==0.2.*
 
 # Discover libpython
-find_libpython==0.3.*
+find_libpython>=0.3,<0.6