diff --git a/old_impl/requirements.txt b/old_impl/requirements.txt
index d6002cc..ce73bf6 100644
--- a/old_impl/requirements.txt
+++ b/old_impl/requirements.txt
@@ -1,5 +1,5 @@
 gensim==3.5.0
 tensorflow==1.12.2
-numpy==1.15.4
+numpy==1.22.0
 jieba==0.39
 scikit_learn==0.20.2