diff --git a/rust-rand_isaac.spec b/rust-rand_isaac.spec
index 7f1da44..313bf44 100644
--- a/rust-rand_isaac.spec
+++ b/rust-rand_isaac.spec
@@ -7,21 +7,18 @@
 
 Name:           rust-%{crate}
 Version:        0.1.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        ISAAC random number generator
 
 # Upstream license specification: MIT/Apache-2.0
 License:        MIT or ASL 2.0
 URL:            https://crates.io/crates/rand_isaac
-Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
+Source:         %{crates_source}
 
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
 BuildRequires:  (crate(rand_core) >= 0.3.0 with crate(rand_core) < 0.4.0)
-BuildRequires:  (crate(rand_core/serde1) >= 0.3.0 with crate(rand_core/serde1) < 0.4.0)
-BuildRequires:  (crate(serde/default) >= 1.0.0 with crate(serde/default) < 2.0.0)
-BuildRequires:  (crate(serde_derive/default) >= 1.0.38 with crate(serde_derive/default) < 2.0.0)
 %if %{with check}
 BuildRequires:  (crate(bincode/default) >= 1.0.0 with crate(bincode/default) < 2.0.0)
 %endif
@@ -94,7 +91,7 @@ which use "serde_derive" feature of "%{crate}" crate.
 %ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
 
 %prep
-%autosetup -n %{crate}-%{version} -p1
+%autosetup -n %{crate}-%{version_no_tilde} -p1
 %cargo_prep
 
 %build
@@ -109,6 +106,9 @@ which use "serde_derive" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sun Mar 10 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.1.1-4
+- Do not pull optional dependencies
+
 * Sat Feb 02 2019 Fedora Release Engineering <releng@fedoraproject.org> - 0.1.1-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild