diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 912cc04..6b7cdf0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -25,6 +25,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install -r requirements.txt
           pip install -r requirements-dev.txt
           pip install pyzmq
 
diff --git a/concore.py b/concore.py
index 924364d..2da1250 100644
--- a/concore.py
+++ b/concore.py
@@ -5,6 +5,7 @@
 import sys
 import re
 import zmq
+import numpy as np
 logging.basicConfig(
     level=logging.INFO,
     format='%(levelname)s - %(message)s'