diff --git a/firebase-dataconnect/connectors/connectors.gradle.kts b/firebase-dataconnect/connectors/connectors.gradle.kts
index ddced6b91ff..7180bec35ad 100644
--- a/firebase-dataconnect/connectors/connectors.gradle.kts
+++ b/firebase-dataconnect/connectors/connectors.gradle.kts
@@ -70,6 +70,8 @@ dependencies {
 
   testImplementation(project(":firebase-dataconnect:testutil"))
   testImplementation(libs.androidx.test.junit)
+  testImplementation(libs.kotest.assertions)
+  testImplementation(libs.kotest.property)
   testImplementation(libs.kotlin.coroutines.test)
   testImplementation(libs.mockk)
   testImplementation(libs.robolectric)
@@ -84,6 +86,7 @@ dependencies {
   androidTestImplementation(libs.kotest.assertions)
   androidTestImplementation(libs.kotest.property)
   androidTestImplementation(libs.kotlin.coroutines.test)
+  androidTestImplementation(libs.testonly.three.ten.abp)
   androidTestImplementation(libs.truth)
   androidTestImplementation(libs.truth.liteproto.extension)
   androidTestImplementation(libs.turbine)
diff --git a/firebase-dataconnect/testutil/testutil.gradle.kts b/firebase-dataconnect/testutil/testutil.gradle.kts
index 097d97c1d4c..9e03b210684 100644
--- a/firebase-dataconnect/testutil/testutil.gradle.kts
+++ b/firebase-dataconnect/testutil/testutil.gradle.kts
@@ -55,6 +55,7 @@ dependencies {
   implementation("com.google.firebase:firebase-auth:22.3.1")
 
   implementation(libs.androidx.test.junit)
+  implementation(libs.kotest.assertions)
   implementation(libs.kotest.property)
   implementation(libs.kotlin.coroutines.test)
   implementation(libs.kotlinx.coroutines.core)
@@ -62,6 +63,7 @@ dependencies {
   implementation(libs.mockk)
   implementation(libs.protobuf.java.lite)
   implementation(libs.robolectric)
+  implementation(libs.testonly.three.ten.abp)
   implementation(libs.truth)
 }
 
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 1a263ab12c8..9a9ff794ba2 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -94,6 +94,12 @@ quickcheck = { module = "net.java:quickcheck", version.ref = "quickcheck" }
 spotless-plugin-gradle = { module = "com.diffplug.spotless:spotless-plugin-gradle", version.ref = "spotless" }
 turbine = { module = "app.cash.turbine:turbine", version = "1.0.0" }
 
+# Remove three-ten-abp once minSdkVersion is changed to 26 or later, and, instead use the
+# correspondingly-named classes from the java.time package, which should be drop-in replacements.
+# Do not use three-ten-abp in production code (it's only for tests) because it has performance
+# issues.
+testonly-three-ten-abp = { module = "com.jakewharton.threetenabp:threetenabp", version = "1.4.7" }
+
 [bundles]
 kotest = ["kotest-runner", "kotest-assertions", "kotest-property", "kotest-property-arbs"]
 playservices = ["playservices-base", "playservices-basement", "playservices-tasks"]