diff --git a/tig-algorithms/src/lib.rs b/tig-algorithms/src/lib.rs
index b0cb6d9..cf41e17 100644
--- a/tig-algorithms/src/lib.rs
+++ b/tig-algorithms/src/lib.rs
@@ -1,3 +1,5 @@
+pub const BUILD_TIME_PATH: &str = env!("CARGO_MANIFEST_DIR");
+
 pub mod knapsack;
 pub use knapsack as c003;
 pub mod satisfiability;
diff --git a/tig-challenges/src/lib.rs b/tig-challenges/src/lib.rs
index b0cb6d9..cf41e17 100644
--- a/tig-challenges/src/lib.rs
+++ b/tig-challenges/src/lib.rs
@@ -1,3 +1,5 @@
+pub const BUILD_TIME_PATH: &str = env!("CARGO_MANIFEST_DIR");
+
 pub mod knapsack;
 pub use knapsack as c003;
 pub mod satisfiability;