diff --git a/CHANGES.txt b/CHANGES.txt
index a53677d2fb..be090b3fad 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -206,6 +206,7 @@
  * Add the ability to disable bulk loading of SSTables (CASSANDRA-18781)
  * Clean up obsolete functions and simplify cql_version handling in cqlsh (CASSANDRA-18787)
 Merged from 5.0:
+ * Make source distribution buildable by ant artifacts as doc/scripts/process-native-protocol-specs-in-docker.sh was not executable (CASSANDRA-20802)
  * SSTableIndexWriter#abort() should log more quietly in cases where an exception is not provided (CASSANDRA-20695)
  * Avoid availability gap between UP and queryability marking for already built SAI indexes on bounce (CASSANDRA-20732)
  * Make Commitlog flush data safely in Direct IO mode (CASSANDRA-20692)
diff --git a/build.xml b/build.xml
index 9fbbc815d0..a59fe71195 100644
--- a/build.xml
+++ b/build.xml
@@ -1024,6 +1024,7 @@
           <exclude name="tools/bin/*.in.sh" />
           <include name=".build/**/*.sh"/>
           <include name="${accord.dir}/gradlew" />
+          <include name="doc/scripts/process-native-protocol-specs-in-docker.sh"/>
         </tarfileset>
       </tar>