diff --git a/solr/CHANGES.txt b/solr/CHANGES.txt
index 961a2e1e9be..5caa0cc51c8 100644
--- a/solr/CHANGES.txt
+++ b/solr/CHANGES.txt
@@ -223,6 +223,9 @@ Other Changes
 * SOLR-5499: Log a warning if /get is not registered when using SolrCloud.
   (Daniel Collins via shalin)
 
+* SOLR-5517: Return HTTP error on POST requests with no Content-Type.
+  (Ryan Ernst, Uwe Schindler)
+
 ==================  4.6.0 ==================
 
 Versions of Major Components