diff --git a/kotlin-apache-kafka/pom.xml b/kotlin-apache-kafka/pom.xml
index 8a18d92d1..9495c936a 100644
--- a/kotlin-apache-kafka/pom.xml
+++ b/kotlin-apache-kafka/pom.xml
@@ -100,7 +100,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.7.10</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <testcontainers.version>1.19.8</testcontainers.version>
         <kafka.version>3.7.1</kafka.version>
         <slf4j.version>2.0.5</slf4j.version>
diff --git a/kotlin-kotest/kotest-spring/pom.xml b/kotlin-kotest/kotest-spring/pom.xml
index 4bad74df0..550b8980c 100644
--- a/kotlin-kotest/kotest-spring/pom.xml
+++ b/kotlin-kotest/kotest-spring/pom.xml
@@ -108,7 +108,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.9.24</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <spring-boot.version>3.0.1</spring-boot.version>
         <junit.jupiter.version>5.6.2</junit.jupiter.version>
         <kotest.version>1.1.3</kotest.version>
diff --git a/kotlin-kover/pom.xml b/kotlin-kover/pom.xml
index 0d98f9b44..0a9bc381b 100644
--- a/kotlin-kover/pom.xml
+++ b/kotlin-kover/pom.xml
@@ -12,7 +12,7 @@
         <dependency>
             <groupId>org.jetbrains.kotlin</groupId>
             <artifactId>kotlin-stdlib</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21</version>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
diff --git a/kotlin-native/pom.xml b/kotlin-native/pom.xml
index 1c1af5553..2c8de0b22 100644
--- a/kotlin-native/pom.xml
+++ b/kotlin-native/pom.xml
@@ -69,7 +69,7 @@
     </profiles>
 
     <properties>
-        <kotlin.version>1.8.10</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
     </properties>
 
 </project>
diff --git a/kotlin-openapi/pom.xml b/kotlin-openapi/pom.xml
index 445d53a82..2b337ae3c 100644
--- a/kotlin-openapi/pom.xml
+++ b/kotlin-openapi/pom.xml
@@ -132,7 +132,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.9.24</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <openapi-generator-maven-plugin.version>7.6.0</openapi-generator-maven-plugin.version>
         <spring-doc.version>1.8.0</spring-doc.version>
     </properties>
diff --git a/kotlin-performance-vs-java/pom.xml b/kotlin-performance-vs-java/pom.xml
index c496bbfbb..24d45f22f 100644
--- a/kotlin-performance-vs-java/pom.xml
+++ b/kotlin-performance-vs-java/pom.xml
@@ -73,7 +73,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.6.10</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <maven-jar-plugin.version>3.4.2</maven-jar-plugin.version>
         <maven-assembly-plugin.version>3.5.0</maven-assembly-plugin.version>
         <jmh.version>1.37</jmh.version>
diff --git a/kotlin-self-executable-jar/kotlin-executable-jar/pom.xml b/kotlin-self-executable-jar/kotlin-executable-jar/pom.xml
index 2758be24e..0e3dec6d4 100644
--- a/kotlin-self-executable-jar/kotlin-executable-jar/pom.xml
+++ b/kotlin-self-executable-jar/kotlin-executable-jar/pom.xml
@@ -77,7 +77,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.6.0</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <ktor.version>1.6.5</ktor.version>
         <logback.version>1.2.13</logback.version>
     </properties>
diff --git a/kotlin-self-executable-jar/kotlin-spring-executable/pom.xml b/kotlin-self-executable-jar/kotlin-spring-executable/pom.xml
index e005f7343..b6a747bfe 100644
--- a/kotlin-self-executable-jar/kotlin-spring-executable/pom.xml
+++ b/kotlin-self-executable-jar/kotlin-spring-executable/pom.xml
@@ -136,7 +136,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.8.22</kotlin.version> <!-- Updating to latest Kotlin version breaks test -->
+        <kotlin.version>2.0.21</kotlin.version> <!-- Updating to latest Kotlin version breaks test -->
     </properties>
 
 </project>
diff --git a/kotlin-yaml/pom.xml b/kotlin-yaml/pom.xml
index 30fc30ea8..3e35b0e12 100644
--- a/kotlin-yaml/pom.xml
+++ b/kotlin-yaml/pom.xml
@@ -68,7 +68,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.8.0</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <serialization.version>1.5.0</serialization.version>
         <serialization.jvm.version>1.5.0</serialization.jvm.version>
         <kaml-jvm.version>0.58.0</kaml-jvm.version>
diff --git a/ktlint-custom/pom.xml b/ktlint-custom/pom.xml
index ae89c6149..20a309480 100644
--- a/ktlint-custom/pom.xml
+++ b/ktlint-custom/pom.xml
@@ -79,7 +79,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.9.10</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <pinterest.ktlint.version>1.0.1</pinterest.ktlint.version>
         <java.version>11</java.version>
         <maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
diff --git a/spring-boot-kotlin-2/pom.xml b/spring-boot-kotlin-2/pom.xml
index 062c053fd..085c2648e 100644
--- a/spring-boot-kotlin-2/pom.xml
+++ b/spring-boot-kotlin-2/pom.xml
@@ -114,7 +114,7 @@
     </build>
 
     <properties>
-        <kotlin.version>1.9.24</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <httpclient5.version>5.4</httpclient5.version>
     </properties>