diff --git a/src/bigint.rs b/src/bigint.rs
index 9693e473..93bb6b26 100644
--- a/src/bigint.rs
+++ b/src/bigint.rs
@@ -2559,19 +2559,19 @@ impl BigInt {
     }
 
     /// Returns the truncated principal square root of `self` --
-    /// see [Roots::sqrt](Roots::sqrt).
+    /// see [Roots::sqrt](https://docs.rs/num-integer/0.1/num_integer/trait.Roots.html#method.sqrt).
     pub fn sqrt(&self) -> Self {
         Roots::sqrt(self)
     }
 
     /// Returns the truncated principal cube root of `self` --
-    /// see [Roots::cbrt](Roots::cbrt).
+    /// see [Roots::cbrt](https://docs.rs/num-integer/0.1/num_integer/trait.Roots.html#method.cbrt).
     pub fn cbrt(&self) -> Self {
         Roots::cbrt(self)
     }
 
     /// Returns the truncated principal `n`th root of `self` --
-    /// See [Roots::nth_root](Roots::nth_root).
+    /// See [Roots::nth_root](https://docs.rs/num-integer/0.1/num_integer/trait.Roots.html#tymethod.nth_root).
     pub fn nth_root(&self, n: u32) -> Self {
         Roots::nth_root(self, n)
     }
diff --git a/src/biguint.rs b/src/biguint.rs
index 5411f798..e7a3ce19 100644
--- a/src/biguint.rs
+++ b/src/biguint.rs
@@ -1839,19 +1839,19 @@ impl BigUint {
     }
 
     /// Returns the truncated principal square root of `self` --
-    /// see [Roots::sqrt](Roots::sqrt)
+    /// see [Roots::sqrt](https://docs.rs/num-integer/0.1/num_integer/trait.Roots.html#method.sqrt)
     pub fn sqrt(&self) -> Self {
         Roots::sqrt(self)
     }
 
     /// Returns the truncated principal cube root of `self` --
-    /// see [Roots::cbrt](Roots::cbrt).
+    /// see [Roots::cbrt](https://docs.rs/num-integer/0.1/num_integer/trait.Roots.html#method.cbrt).
     pub fn cbrt(&self) -> Self {
         Roots::cbrt(self)
     }
 
     /// Returns the truncated principal `n`th root of `self` --
-    /// see [Roots::nth_root](Roots::nth_root).
+    /// see [Roots::nth_root](https://docs.rs/num-integer/0.1/num_integer/trait.Roots.html#tymethod.nth_root).
     pub fn nth_root(&self, n: u32) -> Self {
         Roots::nth_root(self, n)
     }