diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8acece5..5c5377c 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,7 +1,7 @@
 configparser==3.5.0
 dash==0.37.0
 filelock==3.0.8
-future==0.16.0
+future==0.18.3
 futures==3.1.1
 ipyparallel==6.2.2
 lxml==4.6.3
diff --git a/rtd.requirements.txt b/rtd.requirements.txt
index e28bd36..1fc8115 100644
--- a/rtd.requirements.txt
+++ b/rtd.requirements.txt
@@ -4,7 +4,7 @@ dash-html-components==1.0.1
 dash-renderer==1.1.2
 filelock==3.0.8
 Flask==1.0.2
-future==0.17.1
+future==0.18.3
 ipyparallel==6.2.2
 lxml==4.2.5
 matplotlib==2.2.3