diff --git a/.gitignore b/.gitignore
index db2a8e7..057911d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /cexpr-0.3.1.crate
 /cexpr-0.3.2.crate
 /cexpr-0.3.3.crate
+/cexpr-0.3.4.crate
diff --git a/rust-cexpr.spec b/rust-cexpr.spec
index 83cf500..716f027 100644
--- a/rust-cexpr.spec
+++ b/rust-cexpr.spec
@@ -6,8 +6,8 @@
 %global crate cexpr
 
 Name:           rust-%{crate}
-Version:        0.3.3
-Release:        2%{?dist}
+Version:        0.3.4
+Release:        1%{?dist}
 Summary:        C expression parser and evaluator
 
 # Upstream license specification: Apache-2.0/MIT
@@ -21,7 +21,7 @@ BuildRequires:  rust-packaging
 BuildRequires:  (crate(nom/default) >= 4.0.0 with crate(nom/default) < 5.0.0)
 BuildRequires:  (crate(nom/verbose-errors) >= 4.0.0 with crate(nom/verbose-errors) < 5.0.0)
 %if %{with check}
-BuildRequires:  (crate(clang-sys/default) >= 0.13.0 with crate(clang-sys/default) < 0.27.0)
+BuildRequires:  (crate(clang-sys/default) >= 0.13.0 with crate(clang-sys/default) < 0.28.0)
 %endif
 
 %global _description \
@@ -70,6 +70,9 @@ which use "default" feature of "%{crate}" crate.
 %endif
 
 %changelog
+* Tue Jan 15 2019 Josh Stone <jistone@redhat.com> - 0.3.4-1
+- Update to 0.3.4
+
 * Sun Nov 04 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.3.3-2
 - Adapt to new packaging
 
diff --git a/sources b/sources
index 53347e7..5ba986e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (cexpr-0.3.3.crate) = 825eb03216fde4fdcbbf86cde9970ddb9624b03ca2ca7834610e9306e31832450d16a6dd54fd9328e5d28b5cf915002290add938bfef9ea0d65136fa3b8e2621
+SHA512 (cexpr-0.3.4.crate) = 86c631287cca2768fff5452dc626486d2250bba8f3da62888ba19b672d65e70ae3e482059784dafda66183ec7c314b7f28b97f3e888abd5c89ea9d37051b3e80