diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 281167e..378001f 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -14,9 +14,9 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '1.18.1', '1.17.6', '1.16.5' ]
+        go: [ '1.22', '1.21', '1.20' ]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Pre-run
       run: |
@@ -26,12 +26,12 @@ jobs:
         curl -sL https://taskfile.dev/install.sh | sh
 
     - name: Set up Go
-      uses: actions/setup-go@v4
+      uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go }}
 
     - name: Setup go module cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: |
           ~/.cache/go-build
diff --git a/README.md b/README.md
index 736e1eb..78dc1f8 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ To update Objx to the latest version, run:
     go get -u github.com/stretchr/objx
 
 ### Supported go versions
-We currently support the most recent major Go versions from 1.13 onward.
+We currently support the three recent major Go versions.
 
 ## Contributing
 Please feel free to submit issues, fork the repository and send pull requests!
diff --git a/Taskfile.yml b/Taskfile.yml
index 39f49d5..8a79e8d 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -1,4 +1,4 @@
-version: '2'
+version: '3'
 
 tasks:
   default:
diff --git a/go.mod b/go.mod
index 798ccd8..f7d6883 100644
--- a/go.mod
+++ b/go.mod
@@ -1,7 +1,13 @@
 module github.com/stretchr/objx
 
-go 1.13
+go 1.20
 
-require github.com/stretchr/testify v1.8.2
+require github.com/stretchr/testify v1.8.4
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
 
 exclude github.com/stretchr/testify v1.8.0
diff --git a/go.sum b/go.sum
index 06189aa..50980c7 100644
--- a/go.sum
+++ b/go.sum
@@ -3,8 +3,8 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
-github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
-github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=