diff --git a/pkgs/jnigen/bin/download_maven_jars.dart b/pkgs/jnigen/bin/download_maven_jars.dart
index 9ded7d7c08..a59c59cdf4 100644
--- a/pkgs/jnigen/bin/download_maven_jars.dart
+++ b/pkgs/jnigen/bin/download_maven_jars.dart
@@ -7,6 +7,7 @@ import 'dart:io';
 import 'package:jnigen/jnigen.dart';
 import 'package:jnigen/src/tools/gradle_tools.dart';
 import 'package:jnigen/tools.dart';
+import 'package:path/path.dart';
 
 /// Downloads maven dependencies downloaded by equivalent jnigen invocation.
 ///
@@ -17,8 +18,18 @@ void main(List<String> args) async {
   if (mavenDownloads != null) {
     await GradleTools.downloadMavenSources(
         GradleTools.deps(mavenDownloads.sourceDeps), mavenDownloads.sourceDir);
+    // Include sources in jar download to make sure transitive
+    // dependencies are included
     await GradleTools.downloadMavenJars(
-        GradleTools.deps(mavenDownloads.jarOnlyDeps), mavenDownloads.jarDir);
+        GradleTools.deps(
+            mavenDownloads.jarOnlyDeps + mavenDownloads.sourceDeps),
+        mavenDownloads.jarDir);
+    // // remove duplicated jars
+    for (var dep in mavenDownloads.sourceDeps) {
+      final filename =
+          MavenDependency.fromString(dep).filename(isSource: false);
+      File(join(mavenDownloads.jarDir, filename)).deleteSync();
+    }
     await Directory(mavenDownloads.jarDir)
         .list()
         .map((entry) => entry.path)
diff --git a/pkgs/jnigen/lib/src/summary/summary.dart b/pkgs/jnigen/lib/src/summary/summary.dart
index 97d7fe7ea4..4890eb34f8 100644
--- a/pkgs/jnigen/lib/src/summary/summary.dart
+++ b/pkgs/jnigen/lib/src/summary/summary.dart
@@ -6,6 +6,8 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:path/path.dart';
+
 import '../../tools.dart';
 import '../config/config.dart';
 import '../elements/elements.dart';
@@ -125,8 +127,17 @@ Future<Classes> getSummary(Config config) async {
     await Directory(jarPath).create(recursive: true);
     await GradleTools.downloadMavenSources(
         GradleTools.deps(mavenDl.sourceDeps), mavenDl.sourceDir);
+    // Include sources in jar download to make sure transitive
+    // dependencies are included
     await GradleTools.downloadMavenJars(
-        GradleTools.deps(mavenDl.jarOnlyDeps), mavenDl.jarDir);
+        GradleTools.deps(mavenDl.jarOnlyDeps + mavenDl.sourceDeps),
+        mavenDl.jarDir);
+    for (var dep in mavenDl.sourceDeps) {
+      log.info(dep);
+      final filename =
+          MavenDependency.fromString(dep).filename(isSource: false);
+      File(join(mavenDl.jarDir, filename)).deleteSync();
+    }
     extraJars.addAll(await Directory(jarPath)
         .list()
         .where((entry) => entry.path.endsWith('.jar'))