diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index b5ad3572..ae5e46c6 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: ["1.17.x", "1.18.x", "1.19.x"]
+        go: ["1.18.x", "1.19.x"]
         include:
         - go: 1.19.x
           latest: true
diff --git a/go.mod b/go.mod
index 1b23da24..ff19a98a 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module go.uber.org/dig
 
-go 1.17
+go 1.18
 
 require github.com/stretchr/testify v1.7.1