diff --git a/Cargo.lock b/Cargo.lock
index f6daa13a6963..531fa8156660 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5333,7 +5333,7 @@ name = "style"
 version = "0.0.1"
 dependencies = [
  "app_units",
- "arrayvec 0.4.6",
+ "arrayvec 0.5.1",
  "atomic_refcell",
  "bindgen",
  "bitflags",
@@ -5941,11 +5941,11 @@ checksum = "fd2be2d6639d0f8fe6cdda291ad456e23629558d466e2789d2c3e9892bda285d"
 
 [[package]]
 name = "uluru"
-version = "0.3.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2606e9192f308ddc4f0b3c5d1bf3400e28a70fff956e9d9f46d23b094746d9f"
+checksum = "6d7b39d0c32eba57d52d334e4bdd150df6e755264eefaa1ae2e7cd125f35e1ca"
 dependencies = [
- "arrayvec 0.4.6",
+ "arrayvec 0.5.1",
 ]
 
 [[package]]
diff --git a/components/style/Cargo.toml b/components/style/Cargo.toml
index 4489bece8ad4..47a0d4392ef5 100644
--- a/components/style/Cargo.toml
+++ b/components/style/Cargo.toml
@@ -18,8 +18,9 @@ doctest = false
 [features]
 gecko = ["style_traits/gecko", "fallible/known_system_malloc", "bindgen", "regex", "toml"]
 servo = ["serde", "style_traits/servo", "servo_atoms", "servo_config", "html5ever",
-         "cssparser/serde", "encoding_rs", "malloc_size_of/servo", "arrayvec/use_union",
-         "servo_url", "string_cache", "crossbeam-channel", "to_shmem/servo", "servo_arc/servo"]
+         "cssparser/serde", "encoding_rs", "malloc_size_of/servo", "servo_url",
+         "string_cache", "crossbeam-channel", "to_shmem/servo",
+         "servo_arc/servo"]
 servo-layout-2013 = []
 servo-layout-2020 = []
 gecko_debug = []