diff --git a/requirements-dev.txt b/requirements-dev.txt
index 12ba2ad..cf6bc8f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ bandit==1.7.5
 black==23.7.0
 isort==5.12.0
 docformatter==1.7.5
-mypy==1.5.0
+mypy==1.5.1
 pyright==1.1.323
 # stubs
 pandas-stubs==2.0.3.230814