diff --git a/java/config/config.go b/java/config/config.go
index d2a8c46..da4eed7 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -126,6 +126,7 @@
 	pctx.HostJavaToolVariable("JetifierJar", "jetifier.jar")
 
 	pctx.HostBinToolVariable("SoongJavacWrapper", "soong_javac_wrapper")
+	pctx.HostBinToolVariable("DexpreoptGen", "dexpreopt_gen")
 
 	pctx.VariableFunc("JavacWrapper", func(ctx android.PackageVarContext) string {
 		if override := ctx.Config().Getenv("JAVAC_WRAPPER"); override != "" {
@@ -152,4 +153,6 @@
 
 	pctx.SourcePathsVariable("ManifestMergerJars", " ", ManifestMergerClasspath...)
 	pctx.SourcePathsVariable("ManifestMergerClasspath", ":", ManifestMergerClasspath...)
+
+	pctx.HostBinToolVariable("ZipAlign", "zipalign")
 }