diff --git a/constants.gradle b/constants.gradle
index ca446af889..5dda635a10 100644
--- a/constants.gradle
+++ b/constants.gradle
@@ -24,7 +24,7 @@ project.ext {
     junitVersion = '4.13.2'
     // Use the same Guava version as the Android repo:
     // https://cs.android.com/android/platform/superproject/+/master:external/guava/METADATA
-    guavaVersion = '31.0.1-android'
+    guavaVersion = '27.1-android'
     mockitoVersion = '3.12.4'
     robolectricVersion = '4.6.1'
     // Keep this in sync with Google's internal Checker Framework version.