diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 94577c903d9..d9c2dfd90c3 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -25,7 +25,7 @@ log4j2 = "2.26.1"
 nopen = "1.0.1"
 # see https://www.jetbrains.com/help/kotlin-multiplatform-dev/compose-compatibility-and-versioning.html#kotlin-compatibility
 # see https://developer.android.com/jetpack/androidx/releases/compose-kotlin
-okhttp = "4.9.2"
+okhttp = "5.5.1"
 openfeature = "1.18.2"
 otel = "1.63.0"
 otelAlpha = "1.63.0-alpha"
@@ -292,7 +292,7 @@ msgpack = { module = "org.msgpack:msgpack-core", version = "0.9.8" }
 okhttp-mockwebserver = { module = "com.squareup.okhttp3:mockwebserver", version.ref = "okhttp" }
 okhttp-tls = { module = "com.squareup.okhttp3:okhttp-tls", version.ref = "okhttp" }
 # apollo-runtime 5.x pulls in okhttp 5.x; mockwebserver 4.x is incompatible with that classpath
-okhttp-mockwebserver5 = { module = "com.squareup.okhttp3:mockwebserver", version = "5.3.0" }
+okhttp-mockwebserver5 = { module = "com.squareup.okhttp3:mockwebserver", version = "5.5.1" }
 okio = { module = "com.squareup.okio:okio", version = "1.13.0" }
 roboelectric = { module = "org.robolectric:robolectric", version = "4.15" }