diff --git a/doc/go1.20.html b/doc/go1.20.html
index abdc684d54..fbfd0b78d2 100644
--- a/doc/go1.20.html
+++ b/doc/go1.20.html
@@ -85,7 +85,7 @@ Do not send CLs removing the interior tags from such phrases.
 <h2 id="bootstrap">Bootstrap</h2>
 
 <p><!-- https://go.dev/issue/44505 -->
-  TODO: <a href="https://go.dev/issue/44505">https://go.dev/issue/44505</a>: adopt Go 1.17 as bootstrap toolchain for Go 1.20
+  TODO: <a href="https://go.dev/issue/44505">https://go.dev/issue/44505</a>: adopt Go 1.17.13 as bootstrap toolchain for Go 1.20
 </p>
 
 <h2 id="library">Core library</h2>
diff --git a/src/cmd/dist/notgo117.go b/src/cmd/dist/notgo117.go
index eb1c949b00..8d551df24b 100644
--- a/src/cmd/dist/notgo117.go
+++ b/src/cmd/dist/notgo117.go
@@ -8,7 +8,7 @@
 //
 // % GOROOT_BOOTSTRAP=$HOME/sdk/go1.16 ./make.bash
 // Building Go cmd/dist using /Users/rsc/sdk/go1.16. (go1.16 darwin/amd64)
-// found packages main (build.go) and building_Go_requires_Go_1_17_or_later (notgo117.go) in /Users/rsc/go/src/cmd/dist
+// found packages main (build.go) and building_Go_requires_Go_1_17_13_or_later (notgo117.go) in /Users/rsc/go/src/cmd/dist
 // %
 //
 // which is the best we can do under the circumstances.
@@ -19,4 +19,4 @@
 //go:build !go1.17
 // +build !go1.17
 
-package building_Go_requires_Go_1_17_or_later
+package building_Go_requires_Go_1_17_13_or_later
diff --git a/src/make.bash b/src/make.bash
index 4616502cec..c07f39bb40 100755
--- a/src/make.bash
+++ b/src/make.bash
@@ -67,13 +67,15 @@
 # timing information to this file. Useful for profiling where the
 # time goes when these scripts run.
 #
-# GOROOT_BOOTSTRAP: A working Go tree >= Go 1.17 for bootstrap.
+# GOROOT_BOOTSTRAP: A working Go tree >= Go 1.17.13 for bootstrap.
 # If $GOROOT_BOOTSTRAP/bin/go is missing, $(go env GOROOT) is
-# tried for all "go" in $PATH. By default, one of $HOME/go1.17,
-# $HOME/sdk/go1.17, or $HOME/go1.4, whichever exists, in that order.
+# tried for all "go" in $PATH. By default, one of $HOME/go1.17.13,
+# $HOME/sdk/go1.17.13, or $HOME/go1.4, whichever exists, in that order.
 # We still check $HOME/go1.4 to allow for build scripts that still hard-code
 # that name even though they put newer Go toolchains there.
 
+bootgo=1.17.13
+
 set -e
 
 if [ ! -f run.bash ]; then
@@ -152,7 +154,7 @@ fi
 goroot_bootstrap_set=${GOROOT_BOOTSTRAP+"true"}
 if [ -z "$GOROOT_BOOTSTRAP" ]; then
 	GOROOT_BOOTSTRAP="$HOME/go1.4"
-	for d in sdk/go1.17 go1.17; do
+	for d in sdk/go$bootgo go$bootgo; do
 		if [ -d "$HOME/$d" ]; then
 			GOROOT_BOOTSTRAP="$HOME/$d"
 		fi
@@ -175,7 +177,7 @@ IFS=$'\n'; for go_exe in $(type -ap go); do
 done; unset IFS
 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
 	echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
-	echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17." >&2
+	echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
 	exit 1
 fi
 # Get the exact bootstrap toolchain version to help with debugging.
@@ -188,7 +190,7 @@ if $verbose; then
 fi
 if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then
 	echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
-	echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17." >&2
+	echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
 	exit 1
 fi
 rm -f cmd/dist/dist
diff --git a/src/make.bat b/src/make.bat
index f956dc2064..104fb485b4 100644
--- a/src/make.bat
+++ b/src/make.bat
@@ -80,8 +80,10 @@ for /f "tokens=*" %%g in ('where go 2^>nul') do (
 		)
 	)
 )
-if "x%GOROOT_BOOTSTRAP%"=="x" if exist "%HOMEDRIVE%%HOMEPATH%\go1.17" set GOROOT_BOOTSTRAP=%HOMEDRIVE%%HOMEPATH%\go1.17
-if "x%GOROOT_BOOTSTRAP%"=="x" if exist "%HOMEDRIVE%%HOMEPATH%\sdk\go1.17" set GOROOT_BOOTSTRAP=%HOMEDRIVE%%HOMEPATH%\sdk\go1.17
+
+set bootgo=1.17.13
+if "x%GOROOT_BOOTSTRAP%"=="x" if exist "%HOMEDRIVE%%HOMEPATH%\go%bootgo%" set GOROOT_BOOTSTRAP=%HOMEDRIVE%%HOMEPATH%\go%bootgo%
+if "x%GOROOT_BOOTSTRAP%"=="x" if exist "%HOMEDRIVE%%HOMEPATH%\sdk\go%bootgo%" set GOROOT_BOOTSTRAP=%HOMEDRIVE%%HOMEPATH%\sdk\go%bootgo%
 if "x%GOROOT_BOOTSTRAP%"=="x" set GOROOT_BOOTSTRAP=%HOMEDRIVE%%HOMEPATH%\Go1.4
 
 :bootstrapset
@@ -147,7 +149,7 @@ goto end
 
 :bootstrapfail
 echo ERROR: Cannot find %GOROOT_BOOTSTRAP%\bin\go.exe
-echo Set GOROOT_BOOTSTRAP to a working Go tree ^>= Go 1.17.
+echo Set GOROOT_BOOTSTRAP to a working Go tree ^>= Go %bootgo%.
 
 :fail
 set GOBUILDFAIL=1
diff --git a/src/make.rc b/src/make.rc
index 04f309b4c5..e17ee316ad 100755
--- a/src/make.rc
+++ b/src/make.rc
@@ -47,12 +47,13 @@ if(~ $1 -v) {
 	shift
 }
 
+bootgo = 1.17.13
 GOROOT = `{cd .. && pwd}
 goroot_bootstrap_set = 'true'
 if(! ~ $#GOROOT_BOOTSTRAP 1){
 	goroot_bootstrap_set = 'false'
 	GOROOT_BOOTSTRAP = $home/go1.4
-	for(d in sdk/go1.17 go1.17)
+	for(d in sdk/go$bootgo go$bootgo)
 		if(test -d $home/$d)
 			GOROOT_BOOTSTRAP = $home/$d
 }
@@ -72,12 +73,12 @@ for(p in $path){
 }
 if(! test -x $GOROOT_BOOTSTRAP/bin/go){
 	echo 'ERROR: Cannot find '$GOROOT_BOOTSTRAP'/bin/go.' >[1=2]
-	echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17.' >[1=2]
+	echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go '$bootgo'.' >[1=2]
 	exit bootstrap
 }
 if(~ $GOROOT_BOOTSTRAP $GOROOT){
 	echo 'ERROR: $GOROOT_BOOTSTRAP must not be set to $GOROOT' >[1=2]
-	echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17.' >[1=2]
+	echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go '$bootgo'.' >[1=2]
 	exit bootstrap
 }