diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 826a752..0069650 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,11 +9,9 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-          - macos-latest
-          - windows-latest
+          # - macos-latest
+          # - windows-latest
         go-version:
-          - '1.16'
-          - '1.17'
           - '1.18'
           - '1.x'  # latest version
     runs-on: ${{ matrix.os }}
diff --git a/README.md b/README.md
index d503975..946be58 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 [![license](https://img.shields.io/github/license/rb-go/namegen.svg)](LICENSE)
 [![Go Reference](https://pkg.go.dev/badge/github.com/rb-go/namegen.svg)](https://pkg.go.dev/github.com/rb-go/namegen)
 [![Go Report Card](https://goreportcard.com/badge/github.com/rb-go/namegen)](https://goreportcard.com/report/github.com/rb-go/namegen)
-[![Coverage Status](https://coveralls.io/repos/github/rb-go/namegen/badge.svg?branch=master)](https://coveralls.io/github/rb-go/namegen?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/rb-go/namegen/badge.svg)](https://coveralls.io/github/rb-go/namegen)
 
 # namegen