diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0d9968f..dadece6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -77,7 +77,7 @@ jobs:
     steps:
     - name: Install Go
       env:
-        GO_COMMIT: f32519e5fbcf1b12f9654a6175e5e72b09ae8f3a # 2022-07-30
+        GO_COMMIT: 3486735bf2ca08dcd84bb820fdcb0dea8102cf82 # 2022-08-31
       run: |
         cd $HOME
         mkdir $HOME/gotip
@@ -85,7 +85,7 @@ jobs:
 
         wget -O gotip.tar.gz https://go.googlesource.com/go/+archive/${GO_COMMIT}.tar.gz
         tar -xf gotip.tar.gz
-        echo "devel go1.19-${GO_COMMIT}" >VERSION
+        echo "devel go1.20-${GO_COMMIT}" >VERSION
 
         cd src
         # GOGC=off helps Go build about 20% faster, if we can spare memory.
diff --git a/go.mod b/go.mod
index fe03d06..29078bf 100644
--- a/go.mod
+++ b/go.mod
@@ -5,15 +5,14 @@ go 1.18
 require (
 	github.com/frankban/quicktest v1.14.3
 	github.com/google/go-cmp v0.5.8
-	github.com/rogpeppe/go-internal v1.8.1
-	golang.org/x/exp v0.0.0-20220602145555-4a0574d9293f
+	github.com/rogpeppe/go-internal v1.9.0
+	golang.org/x/exp v0.0.0-20220827204233-334a2380cb91
 	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4
-	golang.org/x/tools v0.1.11-0.20220509190205-b87ceec0dd4d
+	golang.org/x/tools v0.1.12
 )
 
 require (
 	github.com/kr/pretty v0.3.0 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e // indirect
-	gopkg.in/errgo.v2 v2.1.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 6184107..8db2f70 100644
--- a/go.sum
+++ b/go.sum
@@ -14,17 +14,15 @@ github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e h1:aoZm08cpOy4WuID//EZDgcC4zIxODThtZNPirFr42+A=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
-github.com/rogpeppe/go-internal v1.8.1 h1:geMPLpDpQOgVyCg5z5GoRwLHepNdb71NXb67XFkP+Eg=
-github.com/rogpeppe/go-internal v1.8.1/go.mod h1:JeRgkft04UBgHMgCIwADu4Pn6Mtm5d4nPKWu0nJ5d+o=
-golang.org/x/exp v0.0.0-20220602145555-4a0574d9293f h1:KK6mxegmt5hGJRcAnEDjSNLxIRhZxDcgwMbcO/lMCRM=
-golang.org/x/exp v0.0.0-20220602145555-4a0574d9293f/go.mod h1:yh0Ynu2b5ZUe3MQfp2nM0ecK7wsgouWTDN0FNeJuIys=
+github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+golang.org/x/exp v0.0.0-20220827204233-334a2380cb91 h1:tnebWN09GYg9OLPss1KXj8txwZc6X6uMr6VFdcGNbHw=
+golang.org/x/exp v0.0.0-20220827204233-334a2380cb91/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/sys v0.0.0-20211019181941-9d821ace8654 h1:id054HUawV2/6IGm2IV8KZQjqtwAOo2CYlOToYqa0d0=
-golang.org/x/tools v0.1.11-0.20220509190205-b87ceec0dd4d h1:S3qBFWgWXvFR7WrB8yRhfbybHNf6ihmUn2+tewXCRrs=
-golang.org/x/tools v0.1.11-0.20220509190205-b87ceec0dd4d/go.mod h1:SgwaegtQh8clINPpECJMqnxLv9I09HLqnW3RMqW0CA4=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
+golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/errgo.v2 v2.1.0 h1:0vLT13EuvQ0hNvakwLuFZ/jYrLp5F3kcWHXdRggjCE8=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=