diff --git a/README.md b/README.md
index 077f1e3..9631605 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ base64.decode(bytes, {alphabet: 'BCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuv
 
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 [![Version](https://img.shields.io/npm/v/@codec-bytes/base64.svg)](https://www.npmjs.org/package/@codec-bytes/base64)
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+[![Tests](https://img.shields.io/github/actions/workflow/status/codec-bytes/base64/ci.yml?branch=main&event=push&label=tests)](https://github.com/codec-bytes/base64/actions/workflows/ci.yml?query=branch:main)
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