diff --git a/setup.py b/setup.py
index 14e82be..5f1bed0 100755
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
 dependencies = [
     "clvm>=0.9.2",
-    "clvm_tools_rs>=0.1.25"
+    "clvm_tools_rs>=0.1.37"
 ]
 
 dev_dependencies = [