diff --git a/jackson-core.spec b/jackson-core.spec
index 4cff847..05350f0 100644
--- a/jackson-core.spec
+++ b/jackson-core.spec
@@ -28,6 +28,11 @@ as basic shared abstractions.
 %pom_remove_plugin "org.moditect:moditect-maven-plugin"
 %pom_remove_plugin "de.jjohannes:gradle-module-metadata-maven-plugin"
 
+%pom_xpath_set "//pom:javac.src.version" "11"
+%pom_xpath_set "//pom:javac.target.version" "11"
+%pom_xpath_set "//pom:maven.compiler.source" "11"
+%pom_xpath_set "//pom:maven.compiler.target" "11"
+
 cp -p src/main/resources/META-INF/NOTICE .
 sed -i 's/\r//' LICENSE NOTICE