diff --git a/gradle.properties b/gradle.properties
index 1ddbebf8ae..377e2dfe38 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -66,6 +66,7 @@ AUTO_SERVICE_VERSION=1.0-rc3
 DAGGER_VERSION=2.15
 ERROR_PRONE_PLUGIN_VERSION=0.0.13
 ERROR_PRONE_VERSION=2.3.1
+GUAVA_TESTLIB_VERSION=18.0
 GUAVA_VERSION=28.1-android
 JAVAPOET_VERSION=1.9.0
 JSR_305_VERSION=3.0.2
diff --git a/library/build.gradle b/library/build.gradle
index b8dd99192e..2114e30fcf 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -24,7 +24,7 @@ dependencies {
 
     testImplementation "androidx.appcompat:appcompat:${ANDROID_X_APPCOMPAT_VERSION}"
     testImplementation project(':testutil')
-    testImplementation 'com.google.guava:guava-testlib:18.0'
+    testImplementation "com.google.guava:guava-testlib:${GUAVA_TESTLIB_VERSION}"
     testImplementation "com.google.truth:truth:${TRUTH_VERSION}"
     testImplementation "junit:junit:${JUNIT_VERSION}"
     testImplementation "org.mockito:mockito-core:${MOCKITO_VERSION}"
diff --git a/library/test/build.gradle b/library/test/build.gradle
index ee7acf4a56..3143e95dc2 100644
--- a/library/test/build.gradle
+++ b/library/test/build.gradle
@@ -5,7 +5,7 @@ dependencies {
     testImplementation project(':library')
     testImplementation project(':mocks')
     testImplementation project(':testutil')
-    testImplementation 'com.google.guava:guava-testlib:18.0'
+    testImplementation "com.google.guava:guava-testlib:${GUAVA_TESTLIB_VERSION}"
     testImplementation "com.google.truth:truth:${TRUTH_VERSION}"
     testImplementation "junit:junit:${JUNIT_VERSION}"
     testImplementation "org.mockito:mockito-core:${MOCKITO_VERSION}"
diff --git a/third_party/disklrucache/build.gradle b/third_party/disklrucache/build.gradle
index 0fb8d75c09..a98a84db45 100644
--- a/third_party/disklrucache/build.gradle
+++ b/third_party/disklrucache/build.gradle
@@ -1,9 +1,5 @@
 apply plugin: 'com.android.library'
 
-repositories {
-  jcenter()
-}
-
 checkstyle {
     toolVersion = "6.6"
 }
@@ -13,8 +9,7 @@ checkstyle {
 }
 
 dependencies {
-    def junitVersion = hasProperty('JUNIT_VERSION') ? JUNIT_VERSION : '4.13.2';
-    testImplementation "junit:junit:${junitVersion}"
+    testImplementation "junit:junit:${JUNIT_VERSION}"
     testImplementation "com.google.truth:truth:${TRUTH_VERSION}"
 }