diff --git a/CHANGES.txt b/CHANGES.txt
index 0690b0ea9e..86f4b5c758 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,5 @@
 3.11.16
+ * Moved jflex from runtime to build dependencies (CASSANDRA-18664)
  * Fix CAST function for float to decimal (CASSANDRA-18647)
  * Suppress CVE-2022-45688 (CASSANDRA-18643)
  * Remove unrepaired SSTables from garbage collection when only_purge_repaired_tombstones is true (CASSANDRA-14204)
@@ -20,6 +21,7 @@ Merged from 3.0:
  * Validate the existence of a datacenter in nodetool rebuild (CASSANDRA-14319)
  * Suppress CVE-2023-2251 (CASSANDRA-18497)
 
+
 3.11.15
  * Fix the capital P usage in the CQL parser (CASSANDRA-17919)
  * Fix sstable_count metric missing from tablestats json/yaml output (CASSANDRA-18448)
@@ -190,6 +192,7 @@ Merged from 2.2:
  * Fix centos packaging for arm64, >=4.0 rpm's now require python3 (CASSANDRA-16477)
  * Make TokenMetadata's ring version increments atomic (CASSANDRA-16286)
 
+
 3.11.10
  * Fix digest computation for queries with fetched but non queried columns (CASSANDRA-15962)
  * Reduce amount of allocations during batch statement execution (CASSANDRA-16201)
@@ -216,6 +219,7 @@ Merged from 3.0:
 Merged from 2.2:
  * Fix the histogram merge of the table metrics (CASSANDRA-16259)
 
+
 3.11.9
  * Synchronize Keyspace instance store/clear (CASSANDRA-16210)
  * Fix ColumnFilter to avoid querying cells of unselected complex columns (CASSANDRA-15977)
@@ -233,6 +237,7 @@ Merged from 2.2:
  * Package tools/bin scripts as executable (CASSANDRA-16151)
  * Fixed a NullPointerException when calling nodetool enablethrift (CASSANDRA-16127)
 
+
 3.11.8
  * Correctly interpret SASI's `max_compaction_flush_memory_in_mb` setting in megabytes not bytes (CASSANDRA-16071)
  * Fix short read protection for GROUP BY queries (CASSANDRA-15459)
@@ -253,6 +258,7 @@ Merged from 2.2:
 Merged from 2.1:
  * Only allow strings to be passed to JMX authentication (CASSANDRA-16077)
 
+
 3.11.7
  * Fix cqlsh output when fetching all rows in batch mode (CASSANDRA-15905)
  * Upgrade Jackson to 2.9.10 (CASSANDRA-15867)
@@ -1493,7 +1499,6 @@ Merged from 2.1:
  * Sane default (200Mbps) for inter-DC streaming througput (CASSANDRA-8708)
 
 
-
 3.2
  * Make sure tokens don't exist in several data directories (CASSANDRA-6696)
  * Add requireAuthorization method to IAuthorizer (CASSANDRA-10852)
@@ -6526,7 +6531,6 @@ Merged from 0.8:
     - Similarly, merged batch_insert_super into batch_insert.
 
 
-
 0.4.0 beta
  * On-disk data format has changed to allow billions of keys/rows per
    node instead of only millions
@@ -6563,7 +6567,6 @@ Merged from 0.8:
  * Rename configuration "table" to "keyspace"
  * Moved to crash-only design; no more shutdown (just kill the process)
  * Lots of bug fixes
-
 Full list of issues resolved in 0.4 is at https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=true&&pid=12310865&fixfor=12313862&resolution=1&sorter/field=issuekey&sorter/order=DESC
 
 
@@ -6594,3 +6597,5 @@ Full list of issues resolved in 0.4 is at https://issues.apache.org/jira/secure/
  * Combined blocking and non-blocking versions of insert APIs
  * Added FlushPeriodInMinutes configuration parameter to force
    flushing of infrequently-updated ColumnFamilies
+
+
diff --git a/build.xml b/build.xml
index 8f26c5e8f2..30af43ac4d 100644
--- a/build.xml
+++ b/build.xml
@@ -623,7 +623,6 @@
         <dependency groupId="org.hdrhistogram" artifactId="HdrHistogram"/>
 
         <!-- sasi deps -->
-        <dependency groupId="de.jflex" artifactId="jflex" />
         <dependency groupId="com.github.rholder" artifactId="snowball-stemmer" />
         <dependency groupId="com.googlecode.concurrent-trees" artifactId="concurrent-trees" />