diff --git a/requirements/dev.txt b/requirements/dev.txt
index 121473c..c6427e0 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -106,7 +106,7 @@ filetype==1.2.0
     # via
     #   -c main.txt
     #   willow
-idna==3.13
+idna==3.15
     # via
     #   -c main.txt
     #   requests
diff --git a/requirements/main.txt b/requirements/main.txt
index 537db91..df46760 100644
--- a/requirements/main.txt
+++ b/requirements/main.txt
@@ -95,7 +95,7 @@ gunicorn==25.3.0
     # via -r main.in
 humanize==4.15.0
     # via delorean
-idna==3.13
+idna==3.15
     # via requests
 iso8601==2.1.0
     # via colander