diff --git a/requirements-dev.txt b/requirements-dev.txt
index 3955ec0f..e2ec401e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -9,6 +9,7 @@ pyright==1.1.342
 # test
 pytest==7.4.0
 syrupy==4.6.0
+numpy==1.24.4 # opencv needs a 1.x version of Numpy
 opencv-python==4.8.1.78
 requests
 beautifulsoup4