diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 5702dea..f230310 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -60,7 +60,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3.1.0
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3.2.0
+        uses: golangci/golangci-lint-action@v3.3.1
         with:
           version: v1.28
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -99,7 +99,7 @@ jobs:
         uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.golang }}
-      - uses: actions/cache@v3.0.10
+      - uses: actions/cache@v3.0.11
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ matrix.golang }}-${{ hashFiles('**/go.sum') }}
@@ -142,7 +142,7 @@ jobs:
         uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.golang }}
-      - uses: actions/cache@v3.0.10
+      - uses: actions/cache@v3.0.11
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ matrix.golang }}-${{ hashFiles('**/go.sum') }}
diff --git a/go.mod b/go.mod
index b8ed0a3..5bd1280 100644
--- a/go.mod
+++ b/go.mod
@@ -1,15 +1,23 @@
 module moul.io/u
 
-go 1.13
+go 1.19
 
 require (
-	github.com/kr/text v0.2.0 // indirect
-	github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e // indirect
-	github.com/stretchr/testify v1.8.0
+	github.com/stretchr/testify v1.8.1
 	github.com/tailscale/depaware v0.0.0-20210622194025-720c4b409502
 	go.uber.org/multierr v1.8.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
 	golang.org/x/mod v0.4.2 // indirect
 	golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44 // indirect
 	golang.org/x/tools v0.1.0 // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index ec313d6..9dc9335 100644
--- a/go.sum
+++ b/go.sum
@@ -16,12 +16,14 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/tailscale/depaware v0.0.0-20210622194025-720c4b409502 h1:34icjjmqJ2HPjrSuJYEkdZ+0ItmGQAQ75cRHIiftIyE=
 github.com/tailscale/depaware v0.0.0-20210622194025-720c4b409502/go.mod h1:p9lPsd+cx33L3H9nNoecRRxPssFKUwwI50I3pZ0yT+8=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=