diff --git a/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/LicensesTask.groovy b/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/LicensesTask.groovy
index 7041cf94..b2eb0ba6 100644
--- a/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/LicensesTask.groovy
+++ b/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/LicensesTask.groovy
@@ -22,6 +22,7 @@ import org.gradle.api.artifacts.component.ModuleComponentIdentifier
 import org.gradle.api.artifacts.result.ResolvedArtifactResult
 import org.gradle.api.internal.artifacts.DefaultModuleIdentifier
 import org.gradle.api.tasks.InputFile
+import org.gradle.api.tasks.InputFiles
 import org.gradle.api.tasks.OutputDirectory
 import org.gradle.api.tasks.OutputFile
 import org.gradle.api.tasks.TaskAction
@@ -59,6 +60,9 @@ class LicensesTask extends DefaultTask {
     @InputFile
     public File dependenciesJson
 
+    @InputFiles
+    public File[] thirdPartyLicenses
+
     @OutputDirectory
     public File outputDir
 
@@ -102,6 +106,10 @@ class LicensesTask extends DefaultTask {
             }
         }
 
+        for (filename in thirdPartyLicenses.sort{it.getName().toLowerCase()}) {
+            addLicensesFromFile(filename)
+        }
+
         writeMetadata()
     }
 
@@ -229,6 +237,11 @@ class LicensesTask extends DefaultTask {
         }
     }
 
+    private void addLicensesFromFile(File filename) {
+        String licenseName = filename.getName()
+        appendLicense(licenseName, filename.getBytes())
+    }
+
     private File resolvePomFileArtifact(String group, String name, String version) {
         def moduleComponentIdentifier =
                 createModuleComponentIdentifier(group, name, version)
diff --git a/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/OssLicensesPlugin.groovy b/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/OssLicensesPlugin.groovy
index 20926c50..2b8d303c 100644
--- a/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/OssLicensesPlugin.groovy
+++ b/oss-licenses-plugin/src/main/groovy/com/google/android/gms/oss/licenses/plugin/OssLicensesPlugin.groovy
@@ -37,13 +37,17 @@ class OssLicensesPlugin implements Plugin<Project> {
         def licensesMetadataFile = new File(outputDir,
                 "third_party_license_metadata")
         def licenseTask = project.tasks.create("generateLicenses", LicensesTask)
+        def thirdPartyLicensesDir = new File(project.rootProject.projectDir, "third_party_licenses")
+        def thirdPartyLicenses = thirdPartyLicensesDir.exists() ? thirdPartyLicensesDir.listFiles() : []
 
         licenseTask.dependenciesJson = generatedJson
+        licenseTask.thirdPartyLicenses = thirdPartyLicenses
         licenseTask.outputDir = outputDir
         licenseTask.licenses = licensesFile
         licenseTask.licensesMetadata = licensesMetadataFile
 
         licenseTask.inputs.file(generatedJson)
+        licenseTask.inputs.files(thirdPartyLicenses)
         licenseTask.outputs.dir(outputDir)
         licenseTask.outputs.files(licensesFile, licensesMetadataFile)