diff --git a/CHANGELOG.md b/CHANGELOG.md
index f9b8ca4e..3064aa88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Fixed
+
+- Fix generation of `secret_key_base`
+
 ## [1.3.0] - 2019-07-29
 
 ### Changed
diff --git a/config/releases.exs b/config/releases.exs
index d3d2e1c3..a26021ee 100644
--- a/config/releases.exs
+++ b/config/releases.exs
@@ -2,7 +2,7 @@ import Config
 
 defmodule Util do
   def random_encoded_bytes do
-    :crypto.strong_rand_bytes(6) |> Base.encode64()
+    :crypto.strong_rand_bytes(64) |> Base.encode64()
   end
 end