diff --git a/README.md b/README.md
index 0563275..ffaa70b 100644
--- a/README.md
+++ b/README.md
@@ -1120,6 +1120,9 @@ Example Usage:
 
 3.x Changelog
 -------------
+3.6.7 - 14 October 2018
+    * Bugfix: fix tracing to work with OTP21 #480
+
 3.6.6 - 24 September 2018
 
     * Bugfix: When printing records, handle an improper list correctly. #478
diff --git a/src/lager.app.src b/src/lager.app.src
index ded32b2..3fb64f3 100644
--- a/src/lager.app.src
+++ b/src/lager.app.src
@@ -3,7 +3,7 @@
 {application, lager,
  [
   {description, "Erlang logging framework"},
-  {vsn, "3.6.6"},
+  {vsn, "3.6.7"},
   {modules, []},
   {applications, [
                   kernel,