diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a343d1a99a1..c9e9e740d80 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -60,7 +60,7 @@ repos:
   hooks:
   - id: mypy
     exclude: tests
-    args: ["--pretty"]
+    args: ["--pretty", "--no-implicit-optional"]
     additional_dependencies: ['nox==2020.12.31']
 
 - repo: https://github.com/pre-commit/pygrep-hooks