diff --git a/README.md b/README.md
index 68f8bf48b616..4e998f13f2c2 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ Community discussions happen primarily on the [dev mailing list][dev-list] or on
 
 ### Building
 
-Iceberg is built using Gradle 5.4.1.
+Iceberg is built using Gradle 5.4.1 with Java 1.8.
 
 * To invoke a build and run tests: `./gradlew build`
 * To skip tests: `./gradlew build -x test`