diff --git a/rayon-core-1.3.0-fix-metadata.diff b/rayon-core-1.3.0-fix-metadata.diff
index 61b632e..02cc6a8 100644
--- a/rayon-core-1.3.0-fix-metadata.diff
+++ b/rayon-core-1.3.0-fix-metadata.diff
@@ -1,5 +1,5 @@
 --- rayon-core-1.3.0/Cargo.toml	1970-01-01T01:00:00+01:00
-+++ rayon-core-1.3.0/Cargo.toml	2017-11-30T18:25:55.003845+01:00
++++ rayon-core-1.3.0/Cargo.toml	2017-12-31T15:20:55.619484+01:00
 @@ -24,10 +24,10 @@
  license = "Apache-2.0/MIT"
  repository = "https://github.com/nikomatsakis/rayon"
@@ -13,3 +13,11 @@
  
  [dependencies.libc]
  version = "0.2.16"
+@@ -36,6 +36,6 @@
+ version = "1.2"
+ 
+ [dependencies.rand]
+-version = "0.3"
++version = "0.4"
+ 
+ [dev-dependencies]
diff --git a/rust-rayon-core.spec b/rust-rayon-core.spec
index 050b29d..6437c44 100644
--- a/rust-rayon-core.spec
+++ b/rust-rayon-core.spec
@@ -7,7 +7,7 @@
 
 Name:           rust-%{crate}
 Version:        1.3.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Core APIs for Rayon
 
 License:        ASL 2.0 or MIT
@@ -16,6 +16,7 @@ Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{
 # Initial patched metadata
 # * Bump coco to 0.3, https://github.com/rayon-rs/rayon/pull/471
 # * Bump lazy_static to 1, https://github.com/rayon-rs/rayon/pull/484
+# * Bump rand to 0.4, https://github.com/rayon-rs/rayon/pull/502
 Patch0:         rayon-core-1.3.0-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
@@ -26,7 +27,7 @@ BuildRequires:  (crate(coco) >= 0.3.0 with crate(coco) < 0.4.0)
 BuildRequires:  (crate(lazy_static) >= 1.0.0 with crate(lazy_static) < 2.0.0)
 BuildRequires:  (crate(libc) >= 0.2.16 with crate(libc) < 0.3.0)
 BuildRequires:  (crate(num_cpus) >= 1.2.0 with crate(num_cpus) < 2.0.0)
-BuildRequires:  (crate(rand) >= 0.3.0 with crate(rand) < 0.4.0)
+BuildRequires:  (crate(rand) >= 0.4.0 with crate(rand) < 0.5.0)
 
 %description
 %{summary}.
@@ -64,6 +65,9 @@ sed -i 's/\r$//' README.md
 %{cargo_registry}/%{crate}-%{version}/
 
 %changelog
+* Sun Dec 31 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.3.0-4
+- Bump rand to 0.4
+
 * Sun Dec 03 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.3.0-3
 - Fix end-of-line