diff --git a/HISTORY.rst b/HISTORY.rst
index c8e8b16..0fc6518 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -28,3 +28,14 @@ History
 ------------------
 
 * Add min_rnk option to get_study_fields - #12
+
+
+1.0.0 (2024-05-01)
+------------------
+
+Migrates to version 2.0 of the ClinicalTrials API
+
+* Add support for the new API version
+* Add support for the new API fields
+* **Remove get_study_count function**
+* Allow CSV format in full_studies