diff --git a/requirements.txt b/requirements.txt
index bdcdf74..9234f86 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -59,7 +59,7 @@ lxml @ file:///home/conda/feedstock_root/build_artifacts/lxml_1589927514031/work
 MarkupSafe==1.1.1
 matplotlib==3.2.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.1.0
 mkl-random==1.1.0
 mkl-service==2.3.0