diff --git a/build.gradle b/build.gradle
index e46e2ebb..f3be53e5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -55,12 +55,12 @@ artifacts {
 
 dependencies {
     compileOnly 'com.google.appengine:appengine-api-1.0-sdk:2.0.31'
-    api 'com.squareup.okhttp3:okhttp:4.11.0'
+    api 'com.squareup.okhttp3:okhttp:5.3.2'
     api 'com.google.code.gson:gson:2.11.0'
     api 'io.opencensus:opencensus-api:0.31.1'
     implementation 'org.slf4j:slf4j-api:2.0.16'
     testImplementation 'junit:junit:4.13.2'
-    testImplementation 'com.squareup.okhttp3:mockwebserver:4.11.0'
+    testImplementation 'com.squareup.okhttp3:mockwebserver:5.3.2'
     testImplementation 'org.apache.httpcomponents:httpclient:4.5.14'
     testImplementation 'org.slf4j:slf4j-simple:2.0.16'
     testImplementation 'org.apache.commons:commons-lang3:3.17.0'