diff --git a/.circleci/run_tests.sh b/.circleci/run_tests.sh
index 704738fb5..62b118bdd 100755
--- a/.circleci/run_tests.sh
+++ b/.circleci/run_tests.sh
@@ -4,7 +4,7 @@ source $HOME/miniconda/etc/profile.d/conda.sh
 conda activate test
 
 # Install ipdb_kernel spec
-pip install -e .
+pip install -q -e .
 python spyder_kernels/ipdb install --user
 
 # Run tests
diff --git a/setup.py b/setup.py
index 950d54708..2ce7a98cb 100644
--- a/setup.py
+++ b/setup.py
@@ -49,7 +49,7 @@ def get_version(module='spyder_kernels'):
     return version
 
 
-REQUIREMENTS = ['metakernel',
+REQUIREMENTS = ['metakernel>=0.21',
                 'ipykernel>=4.8.2',
                 'pyzmq>=17',
                 'jupyter-client>=5.2.3',