diff --git a/build.gradle b/build.gradle
index 86d5be5ea..ae190beea 100644
--- a/build.gradle
+++ b/build.gradle
@@ -50,7 +50,7 @@ configurations {
   smokeTestRuntimeOnly.extendsFrom runtimeOnly
 }
 
-tasks.withType(JavaCompile) {
+tasks.withType(JavaCompile).configureEach {
   options.compilerArgs << "-Xlint:unchecked" << "-Werror"
 }
 
@@ -59,7 +59,7 @@ tasks.withType(JavaExec).configureEach {
   javaLauncher.set(javaToolchains.launcherFor(java.toolchain))
 }
 
-tasks.withType(Test) {
+tasks.withType(Test).configureEach {
   useJUnitPlatform()
 
   testLogging {
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index ec3c4e64b..34ff50fee 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -20,6 +20,9 @@ spring:
     import: "optional:configtree:/mnt/secrets/opal/"
   application:
     name: Opal Fines Service
+  jackson:
+    serialization:
+      write_dates_as_timestamps: true
   security:
     oauth2:
       client: