diff --git a/rsocket-protobuf/pom.xml b/rsocket-protobuf/pom.xml
index 7730a2e..91099c9 100644
--- a/rsocket-protobuf/pom.xml
+++ b/rsocket-protobuf/pom.xml
@@ -31,7 +31,7 @@
     <project.reporting.outputEncoding>${encoding}</project.reporting.outputEncoding>
 
     <vavr.version>0.10.2</vavr.version>
-    <kotlin.version>1.3.61</kotlin.version>
+    <kotlin.version>1.6.0</kotlin.version>
     <assertk.version>0.21</assertk.version>
     <lombok.version>1.18.12</lombok.version>
     <assertj.version>3.15.0</assertj.version>