diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/build.gradle.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/build.gradle.mustache
index 63dc33d1dbe4..26c07b6e3edd 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/build.gradle.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/build.gradle.mustache
@@ -11,7 +11,7 @@ wrapper {
 buildscript {
     ext.kotlin_version = '1.8.10'
     {{#jvm-ktor}}
-    ext.ktor_version = '2.1.3'
+    ext.ktor_version = '2.2.3'
     {{/jvm-ktor}}
     {{#jvm-retrofit2}}
     ext.retrofitVersion = '2.9.0'
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/build.gradle.kts.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/build.gradle.kts.mustache
index 21c2f97f0804..2bbb82981704 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/build.gradle.kts.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/build.gradle.kts.mustache
@@ -11,7 +11,7 @@ version = "{{artifactVersion}}"
 val kotlin_version = "1.7.21"
 val coroutines_version = "1.6.4"
 val serialization_version = "1.3.3"
-val ktor_version = "2.1.3"
+val ktor_version = "2.2.3"
 
 repositories {
     mavenCentral()
diff --git a/samples/client/petstore/kotlin-array-simple-string-multiplatform/build.gradle.kts b/samples/client/petstore/kotlin-array-simple-string-multiplatform/build.gradle.kts
index 2aaf14f1d7c2..f8781e4f61ce 100644
--- a/samples/client/petstore/kotlin-array-simple-string-multiplatform/build.gradle.kts
+++ b/samples/client/petstore/kotlin-array-simple-string-multiplatform/build.gradle.kts
@@ -11,7 +11,7 @@ version = "1.0.0"
 val kotlin_version = "1.7.21"
 val coroutines_version = "1.6.4"
 val serialization_version = "1.3.3"
-val ktor_version = "2.1.3"
+val ktor_version = "2.2.3"
 
 repositories {
     mavenCentral()
diff --git a/samples/client/petstore/kotlin-bigdecimal-default-multiplatform/build.gradle.kts b/samples/client/petstore/kotlin-bigdecimal-default-multiplatform/build.gradle.kts
index 2aaf14f1d7c2..f8781e4f61ce 100644
--- a/samples/client/petstore/kotlin-bigdecimal-default-multiplatform/build.gradle.kts
+++ b/samples/client/petstore/kotlin-bigdecimal-default-multiplatform/build.gradle.kts
@@ -11,7 +11,7 @@ version = "1.0.0"
 val kotlin_version = "1.7.21"
 val coroutines_version = "1.6.4"
 val serialization_version = "1.3.3"
-val ktor_version = "2.1.3"
+val ktor_version = "2.2.3"
 
 repositories {
     mavenCentral()
diff --git a/samples/client/petstore/kotlin-default-values-multiplatform/build.gradle.kts b/samples/client/petstore/kotlin-default-values-multiplatform/build.gradle.kts
index 2aaf14f1d7c2..f8781e4f61ce 100644
--- a/samples/client/petstore/kotlin-default-values-multiplatform/build.gradle.kts
+++ b/samples/client/petstore/kotlin-default-values-multiplatform/build.gradle.kts
@@ -11,7 +11,7 @@ version = "1.0.0"
 val kotlin_version = "1.7.21"
 val coroutines_version = "1.6.4"
 val serialization_version = "1.3.3"
-val ktor_version = "2.1.3"
+val ktor_version = "2.2.3"
 
 repositories {
     mavenCentral()
diff --git a/samples/client/petstore/kotlin-jvm-ktor-gson/build.gradle b/samples/client/petstore/kotlin-jvm-ktor-gson/build.gradle
index 0acb298375be..4bc5603fb837 100644
--- a/samples/client/petstore/kotlin-jvm-ktor-gson/build.gradle
+++ b/samples/client/petstore/kotlin-jvm-ktor-gson/build.gradle
@@ -8,7 +8,7 @@ wrapper {
 
 buildscript {
     ext.kotlin_version = '1.8.10'
-    ext.ktor_version = '2.1.3'
+    ext.ktor_version = '2.2.3'
     ext.spotless_version = "6.13.0"
 
     repositories {
diff --git a/samples/client/petstore/kotlin-jvm-ktor-jackson/build.gradle b/samples/client/petstore/kotlin-jvm-ktor-jackson/build.gradle
index 7843999a8ff5..ac940c8653b2 100644
--- a/samples/client/petstore/kotlin-jvm-ktor-jackson/build.gradle
+++ b/samples/client/petstore/kotlin-jvm-ktor-jackson/build.gradle
@@ -8,7 +8,7 @@ wrapper {
 
 buildscript {
     ext.kotlin_version = '1.8.10'
-    ext.ktor_version = '2.1.3'
+    ext.ktor_version = '2.2.3'
     ext.spotless_version = "6.13.0"
 
     repositories {
diff --git a/samples/client/petstore/kotlin-jvm-ktor-kotlinx_serialization/build.gradle b/samples/client/petstore/kotlin-jvm-ktor-kotlinx_serialization/build.gradle
index 602a3d7d96e3..8a3f1d30e520 100644
--- a/samples/client/petstore/kotlin-jvm-ktor-kotlinx_serialization/build.gradle
+++ b/samples/client/petstore/kotlin-jvm-ktor-kotlinx_serialization/build.gradle
@@ -8,7 +8,7 @@ wrapper {
 
 buildscript {
     ext.kotlin_version = '1.8.10'
-    ext.ktor_version = '2.1.3'
+    ext.ktor_version = '2.2.3'
     ext.spotless_version = "6.13.0"
 
     repositories {
diff --git a/samples/client/petstore/kotlin-multiplatform/build.gradle.kts b/samples/client/petstore/kotlin-multiplatform/build.gradle.kts
index 2aaf14f1d7c2..f8781e4f61ce 100644
--- a/samples/client/petstore/kotlin-multiplatform/build.gradle.kts
+++ b/samples/client/petstore/kotlin-multiplatform/build.gradle.kts
@@ -11,7 +11,7 @@ version = "1.0.0"
 val kotlin_version = "1.7.21"
 val coroutines_version = "1.6.4"
 val serialization_version = "1.3.3"
-val ktor_version = "2.1.3"
+val ktor_version = "2.2.3"
 
 repositories {
     mavenCentral()