diff --git a/providers/jikkou-provider-kafka/pom.xml b/providers/jikkou-provider-kafka/pom.xml
index 72f6a7884..6dae3ac19 100644
--- a/providers/jikkou-provider-kafka/pom.xml
+++ b/providers/jikkou-provider-kafka/pom.xml
@@ -23,7 +23,7 @@
 
     <properties>
         <license.header.file>${project.parent.basedir}/header</license.header.file>
-        <reactor-core.version>3.6.4</reactor-core.version>
+        <reactor-core.version>3.6.6</reactor-core.version>
     </properties>
 
     <dependencies>
diff --git a/server/jikkou-api-server/pom.xml b/server/jikkou-api-server/pom.xml
index 987bef38b..5f64da1d0 100644
--- a/server/jikkou-api-server/pom.xml
+++ b/server/jikkou-api-server/pom.xml
@@ -120,7 +120,7 @@
         <dependency>
             <groupId>io.projectreactor</groupId>
             <artifactId>reactor-core</artifactId>
-            <version>3.6.4</version>
+            <version>3.6.6</version>
         </dependency>
         <dependency>
             <groupId>io.micronaut</groupId>