diff --git a/build.gradle b/build.gradle
index 21a643f..d684374 100644
--- a/build.gradle
+++ b/build.gradle
@@ -68,14 +68,14 @@ ext {
 dependencies {
     compileOnly project.deps.gocdPluginApi
     implementation group: 'com.google.code.gson', name: 'gson', version: '2.10.1'
-    implementation group: 'com.squareup.okhttp3', name: 'okhttp', version: '4.11.0'
+    implementation group: 'com.squareup.okhttp3', name: 'okhttp', version: '4.12.0'
 
     testImplementation project.deps.gocdPluginApi
     testImplementation group: 'org.mockito', name: 'mockito-core', version: '2.2.28'
     testImplementation group: 'org.hamcrest', name: 'hamcrest-library', version: '1.3'
     testImplementation group: 'org.skyscreamer', name: 'jsonassert', version: '1.4.0'
     testImplementation group: 'org.jsoup', name: 'jsoup', version: '1.10.2'
-    testImplementation group: 'com.squareup.okhttp3', name: 'mockwebserver', version: '4.11.0'
+    testImplementation group: 'com.squareup.okhttp3', name: 'mockwebserver', version: '4.12.0'
 
     testImplementation group: 'junit', name: 'junit', version: '4.12'
 }