diff --git a/.gitignore b/.gitignore
index 1eee83c..e370ed7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@
 /itoa-1.0.1.crate
 /itoa-1.0.2.crate
 /itoa-1.0.3.crate
+/itoa-1.0.4.crate
diff --git a/rust-itoa.spec b/rust-itoa.spec
index 89ebf63..78d6a98 100644
--- a/rust-itoa.spec
+++ b/rust-itoa.spec
@@ -5,7 +5,7 @@
 %global crate itoa
 
 Name:           rust-itoa
-Version:        1.0.3
+Version:        1.0.4
 Release:        %autorelease
 Summary:        Fast integer primitive to string conversion
 
@@ -49,6 +49,18 @@ use the "default" feature of the "%{crate}" crate.
 %files       -n %{name}+default-devel
 %ghost %{crate_instdir}/Cargo.toml
 
+%package     -n %{name}+no-panic-devel
+Summary:        %{summary}
+BuildArch:      noarch
+
+%description -n %{name}+no-panic-devel %{_description}
+
+This package contains library source intended for building other packages which
+use the "no-panic" feature of the "%{crate}" crate.
+
+%files       -n %{name}+no-panic-devel
+%ghost %{crate_instdir}/Cargo.toml
+
 %prep
 %autosetup -n %{crate}-%{version_no_tilde} -p1
 %cargo_prep
diff --git a/sources b/sources
index 9c09e43..dda51e7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (itoa-1.0.3.crate) = 1290c027ec8a13d2d15ace2b58a1d1a3a18730cd5fb55bc995826b8f4d04ede650b8315a8905f6737c4c4988690ae03bf32c86ab3a31ae068a67d5be04cd618b
+SHA512 (itoa-1.0.4.crate) = a70bb6fbdbcab27fbb5a84041bcbad8e0c8fda58d55ca7ac757f7be5cd373101be40df99e9acd6ae49e637e40de037c6bc59560f96c9adeccb2b2e0bf6531e42