diff --git a/xml-commons-apis.spec b/xml-commons-apis.spec
index d7d554a..3bf19af 100644
--- a/xml-commons-apis.spec
+++ b/xml-commons-apis.spec
@@ -1,6 +1,6 @@
 Name:          xml-commons-apis
 Version:       1.4.01
-Release:       23%{?dist}
+Release:       24%{?dist}
 Summary:       APIs for DOM, SAX, and JAXP
 License:       ASL 2.0 and W3C and Public Domain
 URL:           http://xml.apache.org/commons/
@@ -17,7 +17,6 @@ Source4:       http://repo1.maven.org/maven2/xml-apis/xml-apis-ext/1.3.04/xml-ap
 
 BuildRequires: javapackages-local
 BuildRequires: ant
-BuildRequires: zip
 BuildRequires: apache-parent
 
 Provides:      xml-commons = %{version}-%{release}
@@ -66,13 +65,8 @@ sed -i '/distributionManagement/,/\/distributionManagement/ {d}' *.pom
 ant -Dant.build.javac.source=1.5 -Dant.build.javac.target=1.5 jar javadoc
 
 # inject OSGi manifests
-mkdir -p META-INF
-cp -p %{SOURCE1} META-INF/MANIFEST.MF
-touch META-INF/MANIFEST.MF
-zip -u build/xml-apis.jar META-INF/MANIFEST.MF
-cp -p %{SOURCE2} META-INF/MANIFEST.MF
-touch META-INF/MANIFEST.MF
-zip -u build/xml-apis-ext.jar META-INF/MANIFEST.MF
+jar ufm build/xml-apis.jar %{SOURCE1}
+jar ufm build/xml-apis-ext.jar %{SOURCE2}
 
 %mvn_artifact xml-apis-[0-9]*.pom build/xml-apis.jar
 %mvn_artifact xml-apis-ext*.pom build/xml-apis-ext.jar
@@ -97,6 +91,10 @@ rm -rf build/docs/javadoc
 %{_javadocdir}/*
 
 %changelog
+* Mon Sep 25 2017 Mikolaj Izdebski <mizdebsk@redhat.com> - 1.4.01-24
+- Elimitate race condition when injecting JAR manifest
+- Resolves: rhbz#1495249
+
 * Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 1.4.01-23
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild