diff --git a/source/app.d b/source/libpb.d
similarity index 99%
rename from source/app.d
rename to source/libpb.d
index 9e18e2e..7f77244 100644
--- a/source/app.d
+++ b/source/libpb.d
@@ -1,3 +1,5 @@
+module libpb;
+
 import std.json;
 import std.stdio;
 import std.net.curl;