CHANGELOG.md in google-apis-eventarc_v1-0.3.0 vs CHANGELOG.md in google-apis-eventarc_v1-0.4.0

@@ -1,6 +1,11 @@
 # Release history for google-apis-eventarc_v1
 
+### v0.4.0 (2021-03-16)
+
+* Regenerated from discovery document revision 20210312
+* Regenerated using generator version 0.2.0
+
 ### v0.3.0 (2021-03-04)
 
 * Unspecified changes
 
 ### v0.2.0 (2021-02-26)