diff --git a/.gitignore b/.gitignore
index 86e3098..0e19a6f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,6 +30,8 @@
 third_party/android_jar/lib-v[0-9][0-9].tar.gz
 third_party/benchmarks/santa-tracker
 third_party/benchmarks/santa-tracker.tar.gz
+third_party/desugar/desugar_*/
+third_party/desugar/desugar_*.tar.gz
 third_party/gmail/*
 !third_party/gmail/*.sha1
 third_party/gmscore/*
diff --git a/build.gradle b/build.gradle
index e0c50ee..4fae469 100644
--- a/build.gradle
+++ b/build.gradle
@@ -366,6 +366,7 @@
         "proguard/proguard_internal_159423826",
         "framework",
         "goyt",
+        "desugar/desugar_20180308"
     ],
 ]
 
diff --git a/third_party/desugar/desugar_20180308.tar.gz.sha1 b/third_party/desugar/desugar_20180308.tar.gz.sha1
new file mode 100644
index 0000000..bc15c22
--- /dev/null
+++ b/third_party/desugar/desugar_20180308.tar.gz.sha1
@@ -0,0 +1 @@
+e31fb39c34a94592056e878462f086ffb922d1d0
\ No newline at end of file