diff --git a/pysr/version.py b/pysr/version.py
index 55ca81d5c..0359ab743 100644
--- a/pysr/version.py
+++ b/pysr/version.py
@@ -1,2 +1,2 @@
-__version__ = "0.15.4"
-__symbolic_regression_jl_version__ = "0.21.5"
+__version__ = "0.15.5"
+__symbolic_regression_jl_version__ = "0.22.1"