diff --git a/README.md b/README.md
index 256a99ff..588c9323 100644
--- a/README.md
+++ b/README.md
@@ -268,7 +268,7 @@ If Readest has been useful to you, consider supporting its development. You can
 
 <p align="center">
   <a title="Browser testing via TestMu AI" href="https://www.testmu.ai?utm_source=readest&utm_medium=sponsor" target="_blank">
-    <img src="https://raw.githubusercontent.com/readest/readest/refs/heads/main/data/sponsors/testmu-ai-logo.svg" style="vertical-align: middle;" width="250" />
+    <img src="https://raw.githubusercontent.com/readest/readest/refs/heads/main/data/sponsors/testmu-ai-logo.png" style="vertical-align: middle;" width="250" />
   </a>
 </p>
 
diff --git a/data/sponsors/testmu-ai-logo.png b/data/sponsors/testmu-ai-logo.png
new file mode 100644
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Binary files /dev/null and b/data/sponsors/testmu-ai-logo.png differ
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