diff --git a/.gitignore b/.gitignore
index 74f3759..9cc4c76 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ HUnit-1.2.2.1.tar.gz
 /HUnit-1.3.0.0.tar.gz
 /HUnit-1.3.1.1.tar.gz
 /HUnit-1.5.0.0.tar.gz
+/call-stack-0.1.0.tar.gz
diff --git a/sources b/sources
index 548af63..48a9107 100644
--- a/sources
+++ b/sources
@@ -1 +1,2 @@
+SHA512 (call-stack-0.1.0.tar.gz) = 4b8fa206041976948411c7e7babd481b01297c289be72f56dcd56b090bec3b0d3c0a6ef4ce17bb5bd879f08b8059f36ebea664c3c263283457a519e5ce20a0f6
 SHA512 (HUnit-1.5.0.0.tar.gz) = 8be12e82db20ec34069424a47a5fac79d312fe4ad410d0136713431ffed80e020feee78f872b3043ffd41c2033cf643d91a0d8423d186ded152cab51b7888f4e