diff --git a/Makefile b/Makefile
index 297a2fe7d48..f3ad7bfa413 100644
--- a/Makefile
+++ b/Makefile
@@ -143,7 +143,7 @@ PLT_SETUP_OPTIONS =
 
 # Catalog for package sources, but packages within this
 # repo take precedence:
-SRC_CATALOG = https://pkgs.racket-lang.org
+SRC_CATALOG = "https://download.racket-lang.org/releases/8.12/catalog/"
 
 # Built-in catalog for package sources (not meant to be configured):
 DEFAULT_SRC_CATALOG = https://pkgs.racket-lang.org
diff --git a/pkgs/base/info.rkt b/pkgs/base/info.rkt
index d85f61871c1..cfc74b9cc4f 100644
--- a/pkgs/base/info.rkt
+++ b/pkgs/base/info.rkt
@@ -14,7 +14,7 @@
 
 ;; In the Racket source repo, this version should change exactly when
 ;; "racket_version.h" changes:
-(define version "8.11.900.1")
+(define version "8.12")
 
 (define deps `("racket-lib"
                ["racket" #:version ,version]))
diff --git a/racket/src/version/racket_version.h b/racket/src/version/racket_version.h
index bc4b2de88dd..45c63848c23 100644
--- a/racket/src/version/racket_version.h
+++ b/racket/src/version/racket_version.h
@@ -14,9 +14,9 @@
 */
 
 #define MZSCHEME_VERSION_X 8
-#define MZSCHEME_VERSION_Y 11
-#define MZSCHEME_VERSION_Z 900
-#define MZSCHEME_VERSION_W 1
+#define MZSCHEME_VERSION_Y 12
+#define MZSCHEME_VERSION_Z 0
+#define MZSCHEME_VERSION_W 0
 
 /* A level of indirection makes `#` work as needed: */
 #define AS_a_STR_HELPER(x) #x