diff --git a/nemoguardrails/library/jailbreak_detection/requirements.txt b/nemoguardrails/library/jailbreak_detection/requirements.txt
index d970b083f..cbe020128 100644
--- a/nemoguardrails/library/jailbreak_detection/requirements.txt
+++ b/nemoguardrails/library/jailbreak_detection/requirements.txt
@@ -7,5 +7,6 @@ uvicorn>=0.23.2
 transformers>=4.32.1
 torch>=2.1.1
 nemoguardrails>=0.7.0
+numpy==1.23.5
 scikit-learn==1.2.2
 einops>=0.7.0