diff --git a/src/bin/picca.rs b/src/bin/picca.rs
index 0519a6c..8c42fd2 100644
--- a/src/bin/picca.rs
+++ b/src/bin/picca.rs
@@ -8,7 +8,7 @@ use std::sync::{Arc, Mutex};
 use std::thread::{self, JoinHandle, available_parallelism};
 
 use picca::message;
-use picca::hashers;
+use picca::core::hashers;
 
 const ALGORITHMS: [&'static str; 44] = [
   "ascon",
diff --git a/src/core.rs b/src/core.rs
new file mode 100644
index 0000000..2e8146a
--- /dev/null
+++ b/src/core.rs
@@ -0,0 +1 @@
+pub mod hashers;
diff --git a/src/hashers.rs b/src/core/hashers.rs
similarity index 100%
rename from src/hashers.rs
rename to src/core/hashers.rs
diff --git a/src/lib.rs b/src/lib.rs
index d0743b5..e5b125d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,2 +1,2 @@
 pub mod message;
-pub mod hashers;
+pub mod core;