diff --git a/replacer.spec b/replacer.spec
index e122943..054633b 100644
--- a/replacer.spec
+++ b/replacer.spec
@@ -38,11 +38,20 @@ This package contains javadoc for %{name}.
 %pom_remove_plugin :dashboard-maven-plugin
 %pom_remove_plugin :maven-assembly-plugin
 
+# remove hard-coded compiler settings
+%pom_remove_plugin :maven-compiler-plugin
+
+%pom_xpath_inject pom:build/pom:plugins "<plugin>
+<artifactId>maven-javadoc-plugin</artifactId>
+<configuration><source>\${maven.compiler.source}</source><detectJavaApiLink>false</detectJavaApiLink></configuration>
+</plugin>"
+
 %mvn_file :%{name} %{name}
 %mvn_alias :%{name} com.google.code.maven-replacer-plugin:maven-replacer-plugin
 
 %build
-%mvn_build -f
+export JAVA_HOME=/usr/lib/jvm/java-11
+%mvn_build -f -- -Dmaven.compiler.source=1.8 -Dmaven.compiler.target=1.8
 
 %install
 %mvn_install