1 files changed, 2 insertions, 2 deletions
diff --git a/graph/src/builder.rs b/graph/src/builder.rs
index 5505e4f..b04e7f6 100644
--- a/graph/src/builder.rs
+++ b/graph/src/builder.rs
@@ -40,7 +40,7 @@ pub trait Builder: Default {
     /// target should be removed.
     fn remove_edge<F>(&mut self, source: usize, target: usize, predicate: F) -> Result<(), Error>
     where
-        F: Fn(Self::Label) -> bool;
+        F: FnMut(Self::Label) -> bool;
 
     /// Convert the builder into a graph.
     ///
@@ -89,5 +89,5 @@ pub trait BuilderMut {
     /// target should be removed.
     fn remove_edge<F>(&mut self, source: usize, target: usize, predicate: F) -> Result<(), Error>
     where
-        F: Fn(Self::Label) -> bool;
+        F: FnMut(Self::Label) -> bool;
 }