diff --git a/rayon-0.9.0-fix-metadata.diff b/rayon-0.9.0-fix-metadata.diff
new file mode 100644
index 0000000..9c6e773
--- /dev/null
+++ b/rayon-0.9.0-fix-metadata.diff
@@ -0,0 +1,11 @@
+--- rayon-0.9.0/Cargo.toml	1970-01-01T01:00:00+01:00
++++ rayon-0.9.0/Cargo.toml	2017-12-31T15:33:56.527213+01:00
+@@ -34,7 +34,7 @@
+ version = "0.8"
+ 
+ [dev-dependencies.rand]
+-version = "0.3"
++version = "0.4"
+ 
+ [dev-dependencies.serde]
+ version = "1"
diff --git a/rust-rayon.spec b/rust-rayon.spec
index 65cbf31..6c1a6ce 100644
--- a/rust-rayon.spec
+++ b/rust-rayon.spec
@@ -7,12 +7,15 @@
 
 Name:           rust-%{crate}
 Version:        0.9.0
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Simple work-stealing parallelism for Rust
 
 License:        ASL 2.0 or MIT
 URL:            https://crates.io/crates/rayon
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
+# Initial patched metadata
+# * Bump rand to 0.4, https://github.com/rayon-rs/rayon/pull/502
+Patch0:         rayon-0.9.0-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
@@ -24,7 +27,7 @@ BuildRequires:  (crate(rayon-core) >= 1.3.0 with crate(rayon-core) < 2.0.0)
 # [dev-dependencies]
 BuildRequires:  (crate(compiletest_rs) >= 0.3.0 with crate(compiletest_rs) < 0.4.0)
 BuildRequires:  (crate(docopt) >= 0.8.0 with crate(docopt) < 0.9.0)
-BuildRequires:  (crate(rand) >= 0.3.0 with crate(rand) < 0.4.0)
+BuildRequires:  (crate(rand) >= 0.4.0 with crate(rand) < 0.5.0)
 BuildRequires:  (crate(serde) >= 1.0.0 with crate(serde) < 2.0.0)
 BuildRequires:  (crate(serde_derive) >= 1.0.0 with crate(serde_derive) < 2.0.0)
 %endif
@@ -64,6 +67,9 @@ which use %{crate} from crates.io.
 %exclude %{cargo_registry}/%{crate}-%{version}/{appveyor.yml,bors.toml,ci,scripts}
 
 %changelog
+* Sun Dec 31 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.9.0-3
+- Bump rand to 0.4
+
 * Sun Dec 03 2017 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.9.0-2
 - Exclude unneeded files