diff --git a/docs/streams/upgrade-guide.html b/docs/streams/upgrade-guide.html
index ecd2a3bbfe94b..b875fcddc891c 100644
--- a/docs/streams/upgrade-guide.html
+++ b/docs/streams/upgrade-guide.html
@@ -110,6 +110,8 @@ <h3 class="anchor-heading"><a id="streams_notable_changes" class="anchor-link"><
 
     <h3><a id="streams_api_changes_410" href="#streams_api_changes_410">Streams API changes in 4.1.0</a></h3>
 
+    <p><b>Note:</b> Kafka Streams 4.1.0 contains a critical memory leak bug (<a href="https://issues.apache.org/jira/browse/KAFKA-19748">KAFKA-19748</a>) that affects users of range scans and certain DSL operators (session windows, sliding windows, stream-stream joins, foreign-key joins). Users running Kafka Streams should consider upgrading directly to 4.1.1 when available.</p>
+
     <h4>Early Access of the Streams Rebalance Protocol</h4>
 
     <p>
diff --git a/docs/upgrade.html b/docs/upgrade.html
index 745076c078524..4affedf60c750 100644
--- a/docs/upgrade.html
+++ b/docs/upgrade.html
@@ -193,6 +193,8 @@ <h5><a id="upgrade_420_notable" href="#upgrade_420_notable">Notable changes in 4
 
 <h4><a id="upgrade_4_1_0" href="#upgrade_4_1_0">Upgrading to 4.1.0</a></h4>
 
+<p><b>Note:</b> Kafka Streams 4.1.0 contains a critical memory leak bug (<a href="https://issues.apache.org/jira/browse/KAFKA-19748">KAFKA-19748</a>) that affects users of range scans and certain DSL operators (session windows, sliding windows, stream-stream joins, foreign-key joins). Users running Kafka Streams should consider upgrading directly to 4.1.1 when available.</p>
+
 <h5><a id="upgrade_4_1_0_from" href="#upgrade_4_1_0_from">Upgrading Servers to 4.1.0 from any version 3.3.x through 4.0.x</a></h5>
     <h5><a id="upgrade_410_notable" href="#upgrade_410_notable">Notable changes in 4.1.0</a></h5>
         <ul>