diff --git a/java/config/config.go b/java/config/config.go
index 5587a16..980db3b 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -87,6 +87,7 @@
 	pctx.SourcePathVariable("GenKotlinBuildFileCmd", "build/soong/scripts/gen-kotlin-build-file.sh")
 
 	pctx.SourcePathVariable("JarArgsCmd", "build/soong/scripts/jar-args.sh")
+	pctx.HostBinToolVariable("ExtractJarPackagesCmd", "extract_jar_packages")
 	pctx.HostBinToolVariable("SoongZipCmd", "soong_zip")
 	pctx.HostBinToolVariable("MergeZipsCmd", "merge_zips")
 	pctx.HostBinToolVariable("Zip2ZipCmd", "zip2zip")
diff --git a/java/config/makevars.go b/java/config/makevars.go
index 5210f20..27c7daa 100644
--- a/java/config/makevars.go
+++ b/java/config/makevars.go
@@ -77,4 +77,6 @@
 
 	ctx.Strict("JACOCO_CLI_JAR", "${JacocoCLIJar}")
 	ctx.Strict("DEFAULT_JACOCO_EXCLUDE_FILTER", strings.Join(DefaultJacocoExcludeFilter, ","))
+
+	ctx.Strict("EXTRACT_JAR_PACKAGES", "${ExtractJarPackagesCmd}")
 }