diff --git a/api/requirements.txt b/api/requirements.txt
index 37d9b33..c8940c3 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -1,5 +1,5 @@
 flask==1.1.1
-flask-restx==0.1.1
+flask-restx==0.5.1
 flask-cors==3.0.8
 fasttext==0.9.1
 werkzeug==0.16.1  # There is an issue with Flask and werkzeug 1.0.0, don't upgrade yet