diff --git a/bitcoin/requirements.txt b/bitcoin/requirements.txt
index 55c1eaa..34bce4a 100644
--- a/bitcoin/requirements.txt
+++ b/bitcoin/requirements.txt
@@ -24,7 +24,7 @@ jupyter-client==5.2.3
 jupyter-console==5.2.0
 jupyter-core==4.4.0
 MarkupSafe==1.0
-mistune==0.8.3
+mistune==2.0.3
 more-itertools==4.3.0
 nbconvert==5.4.0
 nbformat==4.4.0
diff --git a/powcoin/requirements.txt b/powcoin/requirements.txt
index 41cb789..8cd2ea6 100644
--- a/powcoin/requirements.txt
+++ b/powcoin/requirements.txt
@@ -23,7 +23,7 @@ jupyter-client==5.2.3
 jupyter-console==5.2.0
 jupyter-core==4.4.0
 MarkupSafe==1.0
-mistune==0.8.3
+mistune==2.0.3
 more-itertools==4.3.0
 nbconvert==5.4.0
 nbformat==4.4.0
diff --git a/requirements.txt b/requirements.txt
index 41cb789..8cd2ea6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ jupyter-client==5.2.3
 jupyter-console==5.2.0
 jupyter-core==4.4.0
 MarkupSafe==1.0
-mistune==0.8.3
+mistune==2.0.3
 more-itertools==4.3.0
 nbconvert==5.4.0
 nbformat==4.4.0