diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm/infrastructure/ApiClient.kt.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm/infrastructure/ApiClient.kt.mustache
index ff7e68a98fc..d4b5a587d4c 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm/infrastructure/ApiClient.kt.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm/infrastructure/ApiClient.kt.mustache
@@ -1,5 +1,6 @@
 package {{packageName}}.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 {{#jvm-okhttp3}}
diff --git a/samples/client/petstore/kotlin-gson/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-gson/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index ca294b411c8..b397f322247 100644
--- a/samples/client/petstore/kotlin-gson/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-gson/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -1,5 +1,6 @@
 package org.openapitools.client.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.asRequestBody
diff --git a/samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 3b6246b9ee4..e9201e8a2a9 100644
--- a/samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -1,5 +1,6 @@
 package org.openapitools.client.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.asRequestBody
diff --git a/samples/client/petstore/kotlin-nullable/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-nullable/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 443c18a8353..7a83b73f51c 100644
--- a/samples/client/petstore/kotlin-nullable/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-nullable/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -1,5 +1,6 @@
 package org.openapitools.client.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.asRequestBody
diff --git a/samples/client/petstore/kotlin-okhttp3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-okhttp3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 3eb74d9ddfc..162f8d23473 100644
--- a/samples/client/petstore/kotlin-okhttp3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-okhttp3/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -1,5 +1,6 @@
 package org.openapitools.client.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import okhttp3.MediaType
diff --git a/samples/client/petstore/kotlin-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 443c18a8353..7a83b73f51c 100644
--- a/samples/client/petstore/kotlin-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -1,5 +1,6 @@
 package org.openapitools.client.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.asRequestBody
diff --git a/samples/client/petstore/kotlin-threetenbp/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin-threetenbp/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 443c18a8353..7a83b73f51c 100644
--- a/samples/client/petstore/kotlin-threetenbp/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin-threetenbp/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -1,5 +1,6 @@
 package org.openapitools.client.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.asRequestBody
diff --git a/samples/client/petstore/kotlin/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/petstore/kotlin/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
index 443c18a8353..7a83b73f51c 100644
--- a/samples/client/petstore/kotlin/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+++ b/samples/client/petstore/kotlin/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -1,5 +1,6 @@
 package org.openapitools.client.infrastructure
 
+import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import okhttp3.RequestBody
 import okhttp3.RequestBody.Companion.asRequestBody