diff --git a/Cargo.toml b/Cargo.toml
index 179df1cf0a..bc9975eead 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ utf8-ranges = "1.0.0"
 # For examples.
 lazy_static = "0.2.2"
 # For property based tests.
-quickcheck = { version = "0.4.1", default-features = false }
+quickcheck = { version = "0.5", default-features = false }
 # For generating random test data.
 rand = "0.3.15"
 
diff --git a/regex-syntax/Cargo.toml b/regex-syntax/Cargo.toml
index c6295395b8..4ff62f546b 100644
--- a/regex-syntax/Cargo.toml
+++ b/regex-syntax/Cargo.toml
@@ -9,5 +9,5 @@ homepage = "https://github.com/rust-lang/regex"
 description = "A regular expression parser."
 
 [dev-dependencies]
-quickcheck = { version = "0.4.1", default-features = false }
+quickcheck = { version = "0.5", default-features = false }
 rand = "0.3.15"
diff --git a/regex-syntax/src/properties.rs b/regex-syntax/src/properties.rs
index 9e75f99a4e..c1da573721 100644
--- a/regex-syntax/src/properties.rs
+++ b/regex-syntax/src/properties.rs
@@ -188,8 +188,8 @@ impl Arbitrary for Expr {
             ClassBytes(ref cls) => Box::new(cls.shrink().map(ClassBytes)),
             Group { ref e, ref i, ref name } => {
                 let (i, name) = (i.clone(), name.clone());
-                Box::new(e.clone().shrink()
-                          .chain(e.clone().shrink()
+                Box::new((*e.clone()).shrink()
+                          .chain((*e.clone()).shrink()
                                   .map(move |e| Group {
                                       e: Box::new(e),
                                       i: i.clone(),