diff --git a/environment.yml b/environment.yml
index 1487578a443b..9f06ab7ff143 100644
--- a/environment.yml
+++ b/environment.yml
@@ -64,4 +64,4 @@ dependencies:
   - pytest-xdist
   - tornado
   - pytz
-  - black
+  - black<24
diff --git a/requirements/testing/all.txt b/requirements/testing/all.txt
index 173c5a4a9909..4ca786fcf73e 100644
--- a/requirements/testing/all.txt
+++ b/requirements/testing/all.txt
@@ -1,6 +1,6 @@
 # pip requirements for all the CI builds
 
-black
+black<24
 certifi
 coverage!=6.3
 psutil