diff --git a/src/lib.rs b/src/lib.rs
index 32a888c..1da688d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -63,7 +63,7 @@ impl From<u128> for Icechip<u128> {
     }
 }
 
-impl<T> Icechip<T> {
+impl<T: Shl + Shr + Clone> Icechip<T> {
     pub fn new(version: Version, epoch: Option<u64>) -> Icechip<T> {
         todo!();
     }
@@ -73,7 +73,7 @@ impl<T> Icechip<T> {
         self.epoch = Some(epoch);
     }
 
-    pub fn tick(&self) -> Icechip<T> {
+    pub fn tick<T: Shl + Shr + Clone>(&self) -> Icechip<T> {
         /*
             - if current timestamp in relation to self does not equal self, return an updated value, else increment the sequence
             - if sequence is going to overflow, sleep 1 ms