diff --git a/environment-dev.yml b/environment-dev.yml
index 44b7adef58a..0234bdea0cf 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -36,7 +36,7 @@ dependencies:
   - scikit-learn
   - pymssql
   - psycopg2
-  - mypy
+  - mypy<0.990
   - pandas-stubs
   - fastparquet
   - pip:
diff --git a/requirements-dev.txt b/requirements-dev.txt
index ba3dfc9a247..fefda9a7fa8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -47,6 +47,6 @@ flake8-print
 numpydoc==1.1.0
 # experimental version of fuzzydata requires at least 0.0.6 to successfully resolve all dependencies
 fuzzydata>=0.0.6
-mypy
+mypy<0.990
 pandas-stubs
 fastparquet
\ No newline at end of file