diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index a8b9033..cb39492 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -22,7 +22,7 @@ jobs:
 
   # ── Linux ────────────────────────────────────────────────────────────────────
   linux:
-    name: Build and test — Linux (Java 21 / Flink 2.0)
+    name: Build and test — Linux (Java 21 / Flink 2.1)
     runs-on: ubuntu-latest
 
     steps:
diff --git a/benchmark/pom.xml b/benchmark/pom.xml
index b9c40f7..bfdfa79 100644
--- a/benchmark/pom.xml
+++ b/benchmark/pom.xml
@@ -22,13 +22,13 @@
         <maven.compiler.source>21</maven.compiler.source>
         <maven.compiler.target>21</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <flink.version>2.0.0</flink.version>
+        <flink.version>2.1.3</flink.version>
         <!-- The Kafka connector is externalized (own release line) since Flink 1.17;
-             it no longer follows ${flink.version}. This is its Flink-2.0 build. -->
-        <flink.kafka.version>4.0.1-2.0</flink.kafka.version>
-        <!-- Apache Sedona has no Flink-2.0 build (latest targets Flink 1.19), so the
+             it no longer follows ${flink.version}. This is its Flink 2.1 build. -->
+        <flink.kafka.version>5.0.0-2.1</flink.kafka.version>
+        <!-- Apache Sedona has no Flink 2 release (latest targets Flink 1.19), so the
              sedona/** comparison queries are excluded by default and re-enabled with
-             the "sedona" profile once an upstream Sedona/Flink-2.0 release exists. -->
+             the "sedona" profile once an upstream Sedona release for Flink 2 exists. -->
         <sedona.source.excludes>**/sedona/**</sedona.source.excludes>
         <jackson.version>2.13.4</jackson.version>
         <junit.jupiter.version>5.8.2</junit.jupiter.version>
diff --git a/pom.xml b/pom.xml
index 43c0c15..f35980b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,9 +19,9 @@
         <maven.compiler.target>21</maven.compiler.target>
         <target.java.version>21</target.java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <flink.version>2.0.0</flink.version>
+        <flink.version>2.1.3</flink.version>
         <!-- The Kafka connector is externalized (own release line) since Flink 1.17. -->
-        <flink.kafka.version>4.0.1-2.0</flink.kafka.version>
+        <flink.kafka.version>5.0.0-2.1</flink.kafka.version>
         <jackson.version>2.13.4</jackson.version>
         <junit.jupiter.version>5.7.0</junit.jupiter.version>
         <kafka.version>3.2.0</kafka.version>