diff --git a/.gitignore b/.gitignore
index e69de29..0d0f24d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/shenandoah-jdk11-b516c8c7a0a4.tar.xz
+/systemtap_3.2_tapsets_hg-icedtea8-9d464368e06d.tar.xz
diff --git a/sources b/sources
index e69de29..12a32df 100644
--- a/sources
+++ b/sources
@@ -0,0 +1,2 @@
+SHA512 (shenandoah-jdk11-b516c8c7a0a4.tar.xz) = b39ea358cb1906a1b168fbf0c8df388625a33b047c7a07b96472c9b32368df557d69fc5f8c15d2fab5fee20e092fb502981ab61f23a1f9912d1eecb9eac9406f
+SHA512 (systemtap_3.2_tapsets_hg-icedtea8-9d464368e06d.tar.xz) = cf578221b77d8c7e019f69909bc86c419c5fb5e10bceba9592ff6e7f96887b0a7f07c9cefe90800975247a078785ca190fdec5c2d0f841bb447cee784b570f7d