diff --git a/build-requirements.txt b/build-requirements.txt
index 67f17496..1ed0debe 100644
--- a/build-requirements.txt
+++ b/build-requirements.txt
@@ -1,5 +1,5 @@
 # in the meantime we migrate to pyproject.toml
 # this represent the minimum requirement to build (for the optional speedup)
-mypy==1.4.1
+mypy==1.5.1
 build==0.10.0
 wheel==0.41.1
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 980687d9..34f34fac 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -7,7 +7,7 @@ build==0.10.0
 wheel==0.41.1
 
 black==23.3.0
-mypy==1.4.1
+mypy==1.5.1
 Flask==2.2.3
 pytest==7.4.0
 requests==2.31.0