diff --git a/.gitignore b/.gitignore
index c5b66a6..0b7b35e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /nom-4.1.0.crate
 /nom-4.1.1.crate
 /nom-4.2.0.crate
+/nom-4.2.1.crate
diff --git a/nom-fix-metadata.diff b/nom-fix-metadata.diff
new file mode 100644
index 0000000..355bd01
--- /dev/null
+++ b/nom-fix-metadata.diff
@@ -0,0 +1,32 @@
+--- nom-4.2.1/Cargo.toml	1969-12-31T16:00:00-08:00
++++ nom-4.2.1/Cargo.toml	2019-02-28T12:19:38.703284-08:00
+@@ -92,29 +92,6 @@
+ [[test]]
+ name = "test1"
+ 
+-[[bench]]
+-name = "arithmetic"
+-harness = false
+-
+-[[bench]]
+-name = "http"
+-harness = false
+-
+-[[bench]]
+-name = "ini"
+-harness = false
+-
+-[[bench]]
+-name = "ini_complete"
+-harness = false
+-
+-[[bench]]
+-name = "ini_str"
+-harness = false
+-
+-[[bench]]
+-name = "json"
+-harness = false
+ [dependencies.lazy_static]
+ version = "^1.0"
+ optional = true
diff --git a/rust-nom.spec b/rust-nom.spec
index d13471b..c2075cf 100644
--- a/rust-nom.spec
+++ b/rust-nom.spec
@@ -5,13 +5,16 @@
 %global crate nom
 
 Name:           rust-%{crate}
-Version:        4.2.0
-Release:        3%{?dist}
+Version:        4.2.1
+Release:        1%{?dist}
 Summary:        Byte-oriented, zero-copy, parser combinators library
 
 License:        MIT
 URL:            https://crates.io/crates/nom
 Source:         %{crates_source}
+# Initial patched metadata
+# * the benches are not included in the package
+Patch0:         nom-fix-metadata.diff
 
 ExclusiveArch:  %{rust_arches}
 
@@ -21,6 +24,10 @@ BuildRequires:  (crate(memchr) >= 2.0.0 with crate(memchr) < 3.0.0)
 BuildRequires:  (crate(memchr/use_std) >= 2.0.0 with crate(memchr/use_std) < 3.0.0)
 BuildRequires:  (crate(regex/default) >= 1.0.0 with crate(regex/default) < 2.0.0)
 BuildRequires:  (crate(version_check/default) >= 0.1.0 with crate(version_check/default) < 0.2.0)
+%if %{with check}
+BuildRequires:  (crate(criterion/default) >= 0.2.0 with crate(criterion/default) < 0.3.0)
+BuildRequires:  (crate(jemallocator/default) >= 0.1.0 with crate(jemallocator/default) < 0.2.0)
+%endif
 
 %global _description \
 A byte-oriented, zero-copy, parser combinators library.
@@ -153,6 +160,9 @@ which use "verbose-errors" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Thu Feb 28 2019 Josh Stone <jistone@redhat.com> - 4.2.1-1
+- Update to 4.2.1
+
 * Mon Feb 11 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 4.2.0-3
 - Run tests in infrastructure
 
diff --git a/sources b/sources
index 7825137..6eb49e0 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (nom-4.2.0.crate) = 68c0d7b3db10936fde9569294f885af44a991c8d7caa05628a32aa9e6a9ea3314704b5ab01dd4ccc6fc4a85d1834feb18a85bbaf0b54858b51a065650c365f6a
+SHA512 (nom-4.2.1.crate) = cf22de9de56bbcf7d1b75b2c78534c214d35ea30aa1c094bb11406941ebd4c27776a111fedde8df38da73b8831a6b10e7ee89429a36f744f8ecd7a7dbb7d2d1e