diff --git a/.changeset/khaki-rice-retire.md b/.changeset/khaki-rice-retire.md
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+---
+"@jspsych/plugin-browser-check": major
+---
+
+Initial release of the browser-check plugin. The plugin can measure various features and properties of the participant's browser and optionally exclude participants from the study based on these features and properties.
diff --git a/.changeset/new-llamas-remember.md b/.changeset/new-llamas-remember.md
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+---
+"jspsych": minor
+---
+
+`jsPsych.endExperiment()` has a new, optional second parameter for saving data. Passing in an object of key-value pairs will store the pairs in the data for the final trial of the experiment.