diff --git a/CHANGELOG.md b/CHANGELOG.md
index 520d6028..156c27c3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 Change Log -- Ray Tracing in One Weekend
 ====================================================================================================
 
-# v3.1.2 (in progress)
+# v3.1.2 (2020-06-03)
 
 ### _In One Weekend_
   - Fix: Correct typo: "Intance Translation" -> "Instance Translation"
diff --git a/books/RayTracingInOneWeekend.html b/books/RayTracingInOneWeekend.html
index 02831aa2..171fe0dc 100644
--- a/books/RayTracingInOneWeekend.html
+++ b/books/RayTracingInOneWeekend.html
@@ -7,7 +7,7 @@
                                            Peter Shirley
                           edited by Steve Hollasch and Trevor David Black
                                                 <br>
-                                     Version 3.1.2-alpha, 2020-XX-XX
+                                     Version 3.1.2, 2020-06-03
                                                 <br>
                       Copyright 2018-2020 Peter Shirley. All rights reserved.
 
diff --git a/books/RayTracingTheNextWeek.html b/books/RayTracingTheNextWeek.html
index 9c4ad66f..23dc49e5 100644
--- a/books/RayTracingTheNextWeek.html
+++ b/books/RayTracingTheNextWeek.html
@@ -7,7 +7,7 @@
                                            Peter Shirley
                           edited by Steve Hollasch and Trevor David Black
                                                 <br>
-                                     Version 3.1.2-alpha, 2020-XX-XX
+                                     Version 3.1.2, 2020-06-03
                                                 <br>
                       Copyright 2018-2020 Peter Shirley. All rights reserved.
 
diff --git a/books/RayTracingTheRestOfYourLife.html b/books/RayTracingTheRestOfYourLife.html
index caa9a1f0..97b28044 100644
--- a/books/RayTracingTheRestOfYourLife.html
+++ b/books/RayTracingTheRestOfYourLife.html
@@ -7,7 +7,7 @@
                                            Peter Shirley
                           edited by Steve Hollasch and Trevor David Black
                                                 <br>
-                                     Version 3.1.2-alpha, 2020-XX-XX
+                                     Version 3.1.2, 2020-06-03
                                                 <br>
                       Copyright 2018-2020 Peter Shirley. All rights reserved.