diff --git a/.gitignore b/.gitignore
index 8b3eece..ba80d38 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /owning_ref-0.3.3.crate
+/owning_ref-0.4.0.crate
diff --git a/owning_ref-pr43-fix-tests.patch b/owning_ref-pr43-fix-tests.patch
deleted file mode 100644
index 604b775..0000000
--- a/owning_ref-pr43-fix-tests.patch
+++ /dev/null
@@ -1,51 +0,0 @@
-From f629c7b7db163a919cdd6a353c3318b1d66d5fad Mon Sep 17 00:00:00 2001
-From: Alexandre Bury <alexandre.bury@gmail.com>
-Date: Wed, 10 Jan 2018 15:29:34 +0100
-Subject: [PATCH] Fix tests
-
-Lifetime inference does not work here, we need to define the lifetimes.
-But we can't do that with closures [1] so we use a function instead.
-
-[1]: https://github.com/rust-lang/rust/issues/22340
----
- src/lib.rs | 18 ++++++++++++++++--
- 1 file changed, 16 insertions(+), 2 deletions(-)
-
-diff --git a/src/lib.rs b/src/lib.rs
-index 21ed086..31dae97 100644
---- a/src/lib.rs
-+++ b/src/lib.rs
-@@ -1262,8 +1262,15 @@ mod tests {
-             let foo = [413, 612];
-             let bar = &foo;
- 
-+            // FIXME: lifetime inference fails us, and we can't easily define a lifetime for a closure
-+            // (see https://github.com/rust-lang/rust/issues/22340)
-+            // So we use a function to identify the lifetimes instead.
-+            fn borrow<'a>(a: &'a &[i32; 2]) -> &'a i32 {
-+                &a[0]
-+            }
-+
-             let o: BoxRef<&[i32; 2]> = Box::new(bar).into();
--            let o: BoxRef<&[i32; 2], i32> = o.map(|a: &&[i32; 2]| &a[0]);
-+            let o: BoxRef<&[i32; 2], i32> = o.map(borrow);
-             let o: BoxRef<Erased, i32> = o.erase_owner();
- 
-             assert_eq!(*o, 413);
-@@ -1693,8 +1700,15 @@ mod tests {
-             let mut foo = [413, 612];
-             let bar = &mut foo;
- 
-+            // FIXME: lifetime inference fails us, and we can't easily define a lifetime for a closure
-+            // (see https://github.com/rust-lang/rust/issues/22340)
-+            // So we use a function to identify the lifetimes instead.
-+            fn borrow<'a>(a: &'a mut &mut [i32; 2]) -> &'a mut i32 {
-+                &mut a[0]
-+            }
-+
-             let o: BoxRefMut<&mut [i32; 2]> = Box::new(bar).into();
--            let o: BoxRefMut<&mut [i32; 2], i32> = o.map_mut(|a: &mut &mut [i32; 2]| &mut a[0]);
-+            let o: BoxRefMut<&mut [i32; 2], i32> = o.map_mut(borrow);
-             let o: BoxRefMut<Erased, i32> = o.erase_owner();
- 
-             assert_eq!(*o, 413);
diff --git a/rust-owning_ref.spec b/rust-owning_ref.spec
index 03f5fc9..028c2c8 100644
--- a/rust-owning_ref.spec
+++ b/rust-owning_ref.spec
@@ -6,16 +6,13 @@
 %global crate owning_ref
 
 Name:           rust-%{crate}
-Version:        0.3.3
-Release:        7%{?dist}
+Version:        0.4.0
+Release:        1%{?dist}
 Summary:        Library for creating references that carry their owner with them
 
 License:        MIT
 URL:            https://crates.io/crates/owning_ref
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
-# https://github.com/Kimundi/owning-ref-rs/pull/43
-# see also https://github.com/rust-lang/rust/issues/47524
-Patch1:         owning_ref-pr43-fix-tests.patch
 
 ExclusiveArch:  %{rust_arches}
 
@@ -69,6 +66,9 @@ which use "default" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Sun Oct 28 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.4.0-1
+- Update to 0.4.0
+
 * Sat Oct 27 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.3.3-7
 - Adapt to new packaging
 
diff --git a/sources b/sources
index 13edf62..91aa3ed 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (owning_ref-0.3.3.crate) = 260f3d77f23b092c5ca96dff6746d378caa1bac965745a71ca18eed30a12c6869af62259daafc91c8666baf95e04619ad0d8fe06b47d5e517688b35f0c59005a
+SHA512 (owning_ref-0.4.0.crate) = 51bb1cb259452f7395bce0ac4e7d2d6f3733dfe7a8a1a46d50179516ef921924f745a248e4816da5e434b589b5956a20ca554f9a93790b2ed1c55451b9b885ba