diff --git a/.changeset/pink-ducks-think.md b/.changeset/pink-ducks-think.md
new file mode 100644
index 00000000..5c37e4b0
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+++ b/.changeset/pink-ducks-think.md
@@ -0,0 +1,5 @@
+---
+"@jspsych/plugin-html-audio-response": patch
+---
+
+uses mimetype of audio recorded for playback instead of defaulting to webm