diff --git a/requirements.txt b/requirements.txt
index 808c70a..a2f19b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ braintrace==0.1.2
 # modeling packages
 braincell==0.0.7
 brainpy==2.7.6
-brainpy-state==0.0.3
+brainpy-state==0.0.4
 brainmass==0.0.5
 pinnx==0.0.3