diff --git a/testng.spec b/testng.spec
index f0aa554..3c649ae 100644
--- a/testng.spec
+++ b/testng.spec
@@ -1,8 +1,9 @@
 %bcond_without groovy
+%bcond_without snakeyaml
 
 Name:           testng
 Version:        6.14.3
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Java-based testing framework
 License:        ASL 2.0
 URL:            http://testng.org/
@@ -24,13 +25,15 @@ BuildRequires:  mvn(org.apache.ant:ant)
 BuildRequires:  mvn(org.apache-extras.beanshell:bsh)
 BuildRequires:  mvn(org.apache.felix:maven-bundle-plugin)
 BuildRequires:  mvn(org.sonatype.oss:oss-parent:pom:)
-BuildRequires:  mvn(org.yaml:snakeyaml)
 %if %{with groovy}
 BuildRequires:  mvn(org.assertj:assertj-core) >= 3.8.0
 BuildRequires:  mvn(org.codehaus.gmavenplus:gmavenplus-plugin)
 BuildRequires:  mvn(org.codehaus.groovy:groovy-all)
 BuildRequires:  mvn(org.spockframework:spock-core)
 %endif
+%if %{with snakeyaml}
+BuildRequires:  mvn(org.yaml:snakeyaml)
+%endif
 
 %description
 TestNG is a testing framework inspired from JUnit and NUnit but introducing
@@ -60,6 +63,12 @@ find -name *.class -delete
 %pom_remove_plugin :maven-source-plugin
 %pom_remove_plugin :maven-javadoc-plugin
 
+%if %{without snakeyaml}
+%pom_remove_dep org.yaml:snakeyaml
+rm src/main/java/org/testng/internal/Yaml*.java
+rm src/main/java/org/testng/Converter.java
+%endif
+
 # missing test deps
 %if %{with groovy}
 %pom_add_plugin "org.codehaus.gmavenplus:gmavenplus-plugin" pom.xml \
@@ -81,10 +90,10 @@ cp -p ./src/main/java/*.dtd.html ./src/main/resources/.
 %mvn_alias : :::jdk15:
 
 %build
-%if %{with groovy}
-%mvn_build -- -Dmaven.local.debug=true
+%if %{with groovy} && %{with snakeyaml}
+%mvn_build
 %else
-%mvn_build -f -- -Dmaven.local.debug=true
+%mvn_build -f
 %endif
 
 %install
@@ -98,6 +107,9 @@ cp -p ./src/main/java/*.dtd.html ./src/main/resources/.
 %license LICENSE.txt
 
 %changelog
+* Tue Jul 17 2018 Mikolaj Izdebski <mizdebsk@redhat.com> - 6.14.3-4
+- Allow conditionally building without snakeyaml
+
 * Sat Jul 14 2018 Fedora Release Engineering <releng@fedoraproject.org> - 6.14.3-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild