diff --git a/.gitignore b/.gitignore
index b443088..90df5e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /unicase-2.1.0.crate
 /unicase-2.2.0.crate
 /unicase-2.3.0.crate
+/unicase-2.4.0.crate
diff --git a/rust-unicase.spec b/rust-unicase.spec
index f084729..2e30471 100644
--- a/rust-unicase.spec
+++ b/rust-unicase.spec
@@ -5,7 +5,7 @@
 %global crate unicase
 
 Name:           rust-%{crate}
-Version:        2.3.0
+Version:        2.4.0
 Release:        1%{?dist}
 Summary:        Case-insensitive wrapper around strings
 
@@ -51,6 +51,18 @@ which use "default" feature of "%{crate}" crate.
 %files       -n %{name}+default-devel
 %ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
 
+%package     -n %{name}+nightly-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+nightly-devel %{_description}
+
+This package contains library source intended for building other packages
+which use "nightly" feature of "%{crate}" crate.
+
+%files       -n %{name}+nightly-devel
+%ghost %{cargo_registry}/%{crate}-%{version}/Cargo.toml
+
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
 %cargo_prep
@@ -67,6 +79,9 @@ which use "default" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Thu May 02 08:44:46 CEST 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 2.4.0-1
+- Update to 2.4.0
+
 * Tue Mar 05 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 2.3.0-1
 - Update to 2.3.0
 
diff --git a/sources b/sources
index a9f7d62..a022ab3 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (unicase-2.3.0.crate) = ed6558c85863d576652b19aec21188e47778760cf3244f4d50f75d69410d34d83e1c208ae75899659f57497ace1cb7d079d7fc46cbb252460f8d6618f6337492
+SHA512 (unicase-2.4.0.crate) = d4b7d0e217a8a9180cd01cbce4d1e2bc80a9dbeee735954968c0372c9679f4f84b73294952947890340f20f4f9158b70ec2c13adc11b1f0cb53aa893755cff22