diff --git a/spring-boot-elasticsearch/pom.xml b/spring-boot-elasticsearch/pom.xml
index d557d604..a9b1fba2 100644
--- a/spring-boot-elasticsearch/pom.xml
+++ b/spring-boot-elasticsearch/pom.xml
@@ -24,7 +24,7 @@
 
         <maven.min.version>3.2.1</maven.min.version>
         <java.version>17</java.version>
-        <kotlin.version>1.9.10</kotlin.version>
+        <kotlin.version>1.9.20</kotlin.version>
 
         <elasticsearch-client.version>8.5.3</elasticsearch-client.version>
         <jackson-module-kotlin.version>2.15.3</jackson-module-kotlin.version>
diff --git a/spring-boot-postgres-kotlin/pom.xml b/spring-boot-postgres-kotlin/pom.xml
index 57e4f9ba..d92e4468 100644
--- a/spring-boot-postgres-kotlin/pom.xml
+++ b/spring-boot-postgres-kotlin/pom.xml
@@ -21,7 +21,7 @@
 
         <maven.min.version>3.2.1</maven.min.version>
         <java.version>17</java.version>
-        <kotlin.version>1.9.10</kotlin.version>
+        <kotlin.version>1.9.20</kotlin.version>
 
         <flyway-core.version>9.22.3</flyway-core.version>
 
diff --git a/spring-boot-properties-kotlin/pom.xml b/spring-boot-properties-kotlin/pom.xml
index f32dac53..b6ec4945 100644
--- a/spring-boot-properties-kotlin/pom.xml
+++ b/spring-boot-properties-kotlin/pom.xml
@@ -21,7 +21,7 @@
 
         <maven.min.version>3.2.1</maven.min.version>
         <java.version>17</java.version>
-        <kotlin.version>1.9.10</kotlin.version>
+        <kotlin.version>1.9.20</kotlin.version>
 
         <!-- testing -->
         <junit-jupiter.version>5.10.0</junit-jupiter.version>
diff --git a/spring-boot-rabbitmq/pom.xml b/spring-boot-rabbitmq/pom.xml
index 24b4e925..3743bf98 100644
--- a/spring-boot-rabbitmq/pom.xml
+++ b/spring-boot-rabbitmq/pom.xml
@@ -24,7 +24,7 @@
 
         <maven.min.version>3.2.1</maven.min.version>
         <java.version>17</java.version>
-        <kotlin.version>1.9.10</kotlin.version>
+        <kotlin.version>1.9.20</kotlin.version>
 
         <jackson-module-kotlin.version>2.15.3</jackson-module-kotlin.version>
 
diff --git a/spring-boot-rest-services-kotlin/pom.xml b/spring-boot-rest-services-kotlin/pom.xml
index 81a4267d..ec8483c7 100644
--- a/spring-boot-rest-services-kotlin/pom.xml
+++ b/spring-boot-rest-services-kotlin/pom.xml
@@ -21,7 +21,7 @@
 
         <maven.min.version>3.2.1</maven.min.version>
 		<java.version>17</java.version>
-        <kotlin.version>1.9.10</kotlin.version>
+        <kotlin.version>1.9.20</kotlin.version>
 
         <!-- testing -->
         <junit-jupiter.version>5.10.0</junit-jupiter.version>