diff --git a/.makefile b/.makefile
index 20cf7cd47d..d8b3308bfe 100644
--- a/.makefile
+++ b/.makefile
@@ -344,7 +344,7 @@ RACKET_FOR_BOOTFILES = $(RACKET)
 RACKET_FOR_BUILD = $(RACKET)
 
 # This branch name changes each time the pb boot files are updated:
-PB_BRANCH == circa-8.0.0.6-2
+PB_BRANCH == circa-8.0.0.6-3
 PB_REPO = https://github.com/racket/pb
 
 # Alternative source for Chez Scheme boot files, normally set by
diff --git a/Makefile b/Makefile
index 1e1066c37a..e800e63425 100644
--- a/Makefile
+++ b/Makefile
@@ -47,7 +47,7 @@ RACKETCS_SUFFIX =
 RACKET =
 RACKET_FOR_BOOTFILES = $(RACKET)
 RACKET_FOR_BUILD = $(RACKET)
-PB_BRANCH = circa-8.0.0.6-2
+PB_BRANCH = circa-8.0.0.6-3
 PB_REPO = https://github.com/racket/pb
 EXTRA_REPOS_BASE =
 CS_CROSS_SUFFIX =
@@ -309,18 +309,18 @@ maybe-fetch-pb-as-is:
 	echo done
 fetch-pb-from:
 	mkdir -p racket/src/ChezScheme/boot
-	if [ ! -d racket/src/ChezScheme/boot/pb ] ; 	  then git clone -q -b circa-8.0.0.6-2 $(PB_REPO) racket/src/ChezScheme/boot/pb ; 	  else cd racket/src/ChezScheme/boot/pb && git fetch -q origin circa-8.0.0.6-2:remotes/origin/circa-8.0.0.6-2 ; fi
-	cd racket/src/ChezScheme/boot/pb && git checkout -q circa-8.0.0.6-2
+	if [ ! -d racket/src/ChezScheme/boot/pb ] ; 	  then git clone -q -b circa-8.0.0.6-3 $(PB_REPO) racket/src/ChezScheme/boot/pb ; 	  else cd racket/src/ChezScheme/boot/pb && git fetch -q origin circa-8.0.0.6-3:remotes/origin/circa-8.0.0.6-3 ; fi
+	cd racket/src/ChezScheme/boot/pb && git checkout -q circa-8.0.0.6-3
 pb-fetch:
 	$(MAKE) fetch-pb EXTRA_REPOS_BASE="$(EXTRA_REPOS_BASE)" PB_REPO="$(PB_REPO)"
 pb-build:
 	cd racket/src/ChezScheme && racket rktboot/main.rkt --machine pb
 pb-stage:
-	cd racket/src/ChezScheme/boot/pb && git branch circa-8.0.0.6-2
-	cd racket/src/ChezScheme/boot/pb && git checkout circa-8.0.0.6-2
+	cd racket/src/ChezScheme/boot/pb && git branch circa-8.0.0.6-3
+	cd racket/src/ChezScheme/boot/pb && git checkout circa-8.0.0.6-3
 	cd racket/src/ChezScheme/boot/pb && git add . && git commit --amend -m "new build"
 pb-push:
-	cd racket/src/ChezScheme/boot/pb && git push -u origin circa-8.0.0.6-2
+	cd racket/src/ChezScheme/boot/pb && git push -u origin circa-8.0.0.6-3
 win-cs-base:
 	IF "$(RACKET_FOR_BUILD)" == "" $(MAKE) win-bc-then-cs-base SETUP_BOOT_MODE=--boot WIN32_BUILD_LEVEL=bc PLAIN_RACKET=racket\racketbc DISABLE_STATIC_LIBS="$(DISABLE_STATIC_LIBS)" EXTRA_REPOS_BASE="$(EXTRA_REPOS_BASE)" JOB_OPTIONS="$(JOB_OPTIONS)" PLT_SETUP_OPTIONS="$(PLT_SETUP_OPTIONS)" RACKETBC_SUFFIX="$(RACKETBC_SUFFIX)" RACKETCS_SUFFIX="$(RACKETCS_SUFFIX)"
 	IF not "$(RACKET_FOR_BUILD)" == "" $(MAKE) win-just-cs-base SETUP_BOOT_MODE=--chain DISABLE_STATIC_LIBS="$(DISABLE_STATIC_LIBS)" EXTRA_REPOS_BASE="$(EXTRA_REPOS_BASE)" JOB_OPTIONS="$(JOB_OPTIONS)" PLT_SETUP_OPTIONS="$(PLT_SETUP_OPTIONS)" RACKETCS_SUFFIX="$(RACKETCS_SUFFIX)" RACKET_FOR_BUILD="$(RACKET_FOR_BUILD)"