diff --git a/Makefile b/Makefile
index f1510a8..507fbf3 100644
--- a/Makefile
+++ b/Makefile
@@ -45,8 +45,8 @@ cs019-doc:
 
 setup:
 
-	raco setup --no-docs -P dyoo whalesong.plt 1 11
+	raco setup --no-docs -P dyoo whalesong.plt 1 12
 
 
 planet-link:
-	raco planet link dyoo whalesong.plt 1 11 .
+	raco planet link dyoo whalesong.plt 1 12 .
diff --git a/info.rkt b/info.rkt
index 015ce73..039b03c 100644
--- a/info.rkt
+++ b/info.rkt
@@ -2,8 +2,8 @@
 
 (define name "Whalesong")
 (define blurb '("A Racket to JavaScript compiler"))
-(define release-notes '((p "Bug patch: under rare situations, the scheduler can incorrectly allow  multiple computations to run.  For now, Whalesong's will not release control to the browser during long-running computations.  Program output may be a little bit more delayed as a result.")))
-(define version "1.11")
+(define release-notes '((p "Improving stack traces for the web-world view functions.")))
+(define version "1.12")
 (define categories '(devtools))
 (define repositories '("4.x"))
 (define required-core-version "5.1.1")
diff --git a/make-planet-archive.sh b/make-planet-archive.sh
index dd988dc..ecc8ef6 100755
--- a/make-planet-archive.sh
+++ b/make-planet-archive.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 MAJOR=1
-MINOR=11
+MINOR=12
 PROJNAME=whalesong
 
 
diff --git a/scribblings/cs019.scrbl b/scribblings/cs019.scrbl
index c704de2..d663f23 100644
--- a/scribblings/cs019.scrbl
+++ b/scribblings/cs019.scrbl
@@ -76,7 +76,7 @@ Run the following to create the @filepath{whalesong} launcher program in
 your current directory.
 @codeblock|{
 #lang racket/base
-(require (planet dyoo/whalesong:1:11/make-launcher))
+(require (planet dyoo/whalesong:1:12/make-launcher))
 }|
 This may take a few minutes, as Racket is compiling Whalesong, its
 dependencies, and its documentation.  When it finally finishes,
diff --git a/scribblings/manual.scrbl b/scribblings/manual.scrbl
index c4507a9..28c7a1e 100644
--- a/scribblings/manual.scrbl
+++ b/scribblings/manual.scrbl
@@ -214,7 +214,7 @@ If you want to use Whalesong, run the following to create
 the @filepath{whalesong} launcher:
 @codeblock|{
 #lang racket/base
-(require (planet dyoo/whalesong:1:11/make-launcher))
+(require (planet dyoo/whalesong:1:12/make-launcher))
 }|
 This may take a few minutes, as Racket is compiling Whalesong, its
 dependencies, and its documentation.  When it finally finishes,