diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d4d5c09..cc1a396 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,7 +7,7 @@ jobs:
   test:
     strategy:
       matrix:
-        go-version: [1.15.x, 1.16.x, 1.17.x, 1.18.x, 1.19.x,1.20.x]
+        go-version: [1.16.x, 1.17.x, 1.18.x, 1.19.x,1.20.x]
         os: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/go.mod b/go.mod
index e26586c..ef57bdc 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module github.com/bits-and-blooms/bitset
 
-go 1.15
+go 1.16