diff --git a/.github/workflows/test_pull_request.yml b/.github/workflows/test_pull_request.yml
index f364c59714..24a243c39f 100644
--- a/.github/workflows/test_pull_request.yml
+++ b/.github/workflows/test_pull_request.yml
@@ -14,8 +14,6 @@ jobs:
           - "1.17"
           - "1.16"
           - "1.15"
-          - "1.14"
-          - "1.13"
 
     steps:
       - name: Set up Go ${{ matrix.go }}
diff --git a/go.mod b/go.mod
index 34fb135594..b4659b1eec 100644
--- a/go.mod
+++ b/go.mod
@@ -11,4 +11,4 @@ require (
 	github.com/xeipuuv/gojsonschema v0.0.0-20181112162635-ac52e6811b56
 )
 
-go 1.13
+go 1.15