diff --git a/papers/SubTagger/requirements_pip.txt b/papers/SubTagger/requirements_pip.txt
index 768947c..79d1715 100644
--- a/papers/SubTagger/requirements_pip.txt
+++ b/papers/SubTagger/requirements_pip.txt
@@ -67,7 +67,7 @@ msgpack==0.5.6
 msgpack-numpy==0.4.3.2
 murmurhash==0.28.0
 nltk==3.4.3
-numpy==1.16.4
+numpy==1.22.0
 numpydoc==0.9.1
 overrides==1.9
 packaging==19.0