diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 110b80a6..518ec785 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -5,7 +5,7 @@
 This document provides a high-level view of the changes to the {project-name} by release.
 For a detailed view of what has changed, refer to the {uri-repo}/commits/master[commit history] on GitHub.
 
-== Unreleased
+== 1.5.0.alpha.15 (2020-03-11) - @slonopotamus
 
 * support section numbering and captions (#20)
 * fix `\<<anchor,link text>>` to show link text (#317)
diff --git a/README.adoc b/README.adoc
index 5a370617..d395d21c 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,5 +1,6 @@
 = {project-name}: A _native_ EPUB3 converter for AsciiDoc
 Dan Allen <https://github.com/mojavelinux[@mojavelinux]>; Sarah White <https://github.com/graphitefriction[@graphitefriction]>
+v1.5.0.alpha.15, 2020-03-11
 // Settings:
 :experimental:
 :idprefix:
diff --git a/lib/asciidoctor-epub3/version.rb b/lib/asciidoctor-epub3/version.rb
index 52d3eb84..78d2175f 100644
--- a/lib/asciidoctor-epub3/version.rb
+++ b/lib/asciidoctor-epub3/version.rb
@@ -2,6 +2,6 @@
 
 module Asciidoctor
   module Epub3
-    VERSION = '1.5.0.alpha.15.dev'
+    VERSION = '1.5.0.alpha.15'
   end
 end