diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index adc7433..aff546a 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go: ['1.17', '1.18', '1.19']
+        go: ['1.18', '1.19']
     steps:
       - name: setup
         uses: actions/setup-go@v3
diff --git a/CHANGES.md b/CHANGES.md
index 22e5b12..cd78603 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,10 @@ Notable changes between releases.
 
 ## Latest
 
+## v1.4.1
+
+* Update minimum Go version to v1.18
+
 ## v1.4.0
 
 * `Do` reads Body to reuse HTTP/1.x "keep-alive" TCP connections ([#59](https://github.com/dghubble/sling/pull/59))
diff --git a/go.mod b/go.mod
index 47d3d79..67acad9 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
 module github.com/dghubble/sling
 
-go 1.16
+go 1.18
 
 require github.com/google/go-querystring v1.1.0
diff --git a/go.sum b/go.sum
index beaee76..f99081b 100644
--- a/go.sum
+++ b/go.sum
@@ -2,5 +2,4 @@ github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
 github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=