diff --git a/components/layout/Cargo.toml b/components/layout/Cargo.toml
index b1b0eb176f0..62f6cf47ecc 100644
--- a/components/layout/Cargo.toml
+++ b/components/layout/Cargo.toml
@@ -27,7 +27,7 @@ log = "0.3.5"
 msg = {path = "../msg"}
 net_traits = {path = "../net_traits"}
 ordered-float = "0.2.2"
-parking_lot = {version = "0.3.3", features = ["nightly"]}
+parking_lot = "0.3.3"
 plugins = {path = "../plugins"}
 profile_traits = {path = "../profile_traits"}
 range = {path = "../range"}
diff --git a/components/style/Cargo.toml b/components/style/Cargo.toml
index b289a2856cd..3494ea263c2 100644
--- a/components/style/Cargo.toml
+++ b/components/style/Cargo.toml
@@ -17,7 +17,7 @@ gecko = ["nsstring_vendor"]
 servo = ["serde/unstable", "serde", "serde_derive", "heapsize_derive",
          "style_traits/servo", "app_units/plugins", "servo_atoms", "html5ever-atoms",
          "cssparser/heap_size", "cssparser/serde-serialization",
-         "url/heap_size", "plugins", "parking_lot/nightly"]
+         "url/heap_size", "plugins"]
 testing = []
 
 [dependencies]