diff --git a/src/text2graph/requirements.txt b/src/text2graph/requirements.txt
index fd19de4bc..9afed7664 100644
--- a/src/text2graph/requirements.txt
+++ b/src/text2graph/requirements.txt
@@ -48,7 +48,7 @@ Markdown==3.0.1
 MarkupSafe==1.1.1
 matplotlib==3.0.2
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.6
 mkl-random==1.0.1
 msgpack==0.6.1