diff --git a/requirements.txt b/requirements.txt
index 748defb..9014dd5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -107,7 +107,7 @@ tornado==6.0.2
 tqdm==4.23.4
 traitlets==4.3.2
 ufal.udpipe==1.2.0.2
-urllib3==1.23
+urllib3==1.26.5
 wcwidth==0.1.7
 webencodings==0.5.1
 Werkzeug==0.15.4