diff --git a/Makefile b/Makefile
index 63e93f1df5a..63670e49473 100644
--- a/Makefile
+++ b/Makefile
@@ -46,7 +46,7 @@ PLT_SETUP_OPTIONS =
 
 # Belongs in the "Configuration options" section, but here
 # to accommodate nmake:
-SRC_CATALOG = $(DEFAULT_SRC_CATALOG)
+SRC_CATALOG = "https://download.racket-lang.org/releases/7.8/catalog/"
 
 CPUS = 
 
@@ -275,7 +275,7 @@ MAKE_BUILD_SCHEME = checkout
 # for Chez Scheme, and add `-b <branch>` to `GIT_CLONE_ARGS_qq`
 # to clone a particular branch from that repo
 CHEZ_SCHEME_REPO = https://github.com/racket/ChezScheme
-GIT_CLONE_ARGS_qq = -q --recurse-submodules --depth 1
+GIT_CLONE_ARGS_qq = -q --recurse-submodules --depth 1 -b racket-v7.8
 
 # Altenative source for Chez Scheme repo, normally set by
 # the distro-build client driver
diff --git a/pkgs/base/info.rkt b/pkgs/base/info.rkt
index 66821de90a4..8ae899b9686 100644
--- a/pkgs/base/info.rkt
+++ b/pkgs/base/info.rkt
@@ -12,7 +12,7 @@
 
 (define collection 'multi)
 
-(define version "7.7.0.901")
+(define version "7.8")
 
 (define deps `("racket-lib"
                ["racket" #:version ,version]))
diff --git a/racket/src/racket/src/schvers.h b/racket/src/racket/src/schvers.h
index 6f9f994289e..512c6e023e6 100644
--- a/racket/src/racket/src/schvers.h
+++ b/racket/src/racket/src/schvers.h
@@ -14,9 +14,9 @@
 */
 
 #define MZSCHEME_VERSION_X 7
-#define MZSCHEME_VERSION_Y 7
+#define MZSCHEME_VERSION_Y 8
 #define MZSCHEME_VERSION_Z 0
-#define MZSCHEME_VERSION_W 901
+#define MZSCHEME_VERSION_W 0
 
 /* A level of indirection makes `#` work as needed: */
 #define AS_a_STR_HELPER(x) #x