diff --git a/.circleci/config.yml b/.circleci/config.yml
index a532df33..8820ceb1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -13,6 +13,7 @@ jobs:
       - run:
           name: Test.
           command: flake8 .
+
   osx-python3.6:
     macos:
       xcode: "9.4.1"
@@ -27,6 +28,7 @@ jobs:
       - run:
           name: Test.
           command: venv/bin/python ./bin/run_tests.py
+          no_output_timeout: 30m
 
   osx-python3.7:
     macos:
@@ -42,6 +44,7 @@ jobs:
       - run:
           name: Test.
           command: venv/bin/python ./bin/run_tests.py
+          no_output_timeout: 30m
 
   linux-python3.6:
     docker:
@@ -58,6 +61,7 @@ jobs:
       - run:
           name: Test.
           command: venv/bin/python ./bin/run_tests.py
+          no_output_timeout: 30m
 
 workflows:
   version: 2