diff --git a/slo-checker/dropped-records/requirements.txt b/slo-checker/dropped-records/requirements.txt
index a3d5ff675d6a89b2514f1936b1a8104d13ad9b55..953c033de6079b216de576046c7f0fa08ade820b 100644
--- a/slo-checker/dropped-records/requirements.txt
+++ b/slo-checker/dropped-records/requirements.txt
@@ -4,3 +4,4 @@ uvicorn>=0.15.0,<0.16.0
 #pydantic>=1.8.0,<2.0.0
 #scikit-learn==0.22.2
 pandas==1.0.3
+numpy==1.23.1
diff --git a/slo-checker/generic/requirements.txt b/slo-checker/generic/requirements.txt
index a3d5ff675d6a89b2514f1936b1a8104d13ad9b55..953c033de6079b216de576046c7f0fa08ade820b 100644
--- a/slo-checker/generic/requirements.txt
+++ b/slo-checker/generic/requirements.txt
@@ -4,3 +4,4 @@ uvicorn>=0.15.0,<0.16.0
 #pydantic>=1.8.0,<2.0.0
 #scikit-learn==0.22.2
 pandas==1.0.3
+numpy==1.23.1
diff --git a/slo-checker/record-lag/requirements.txt b/slo-checker/record-lag/requirements.txt
index 770498e91e3f705e98868d009518b355a19a356a..30cedad7e3926bbdf88ee55e1c4899314dce7c6f 100644
--- a/slo-checker/record-lag/requirements.txt
+++ b/slo-checker/record-lag/requirements.txt
@@ -4,3 +4,4 @@ uvicorn>=0.15.0,<0.16.0
 #pydantic>=1.8.0,<2.0.0
 scikit-learn==0.22.2
 pandas==1.0.3
+numpy==1.23.1