diff --git a/src/lib.rs b/src/lib.rs
index 9df79a0..1e54fba 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -89,9 +89,9 @@ fn draw_margin(p: f64, beta: f64, total_players: f64) -> f64 {
 pub struct TrueSkill {
     mu: f64,
     sigma: f64,
-    beta: f64,
-    tau: f64,
-    draw_probability: f64,
+    pub beta: f64,
+    pub tau: f64,
+    pub draw_probability: f64,
     delta: f64,
 }