diff --git a/antlr3.spec b/antlr3.spec
index 66be845..f2576da 100644
--- a/antlr3.spec
+++ b/antlr3.spec
@@ -186,6 +186,7 @@ sed -i 's/jsr14/1.8/' antlr3-maven-archetype/src/main/resources/archetype-resour
 %if %{?pkg_vcmp:%pkg_vcmp java-devel >= 9}%{!?pkg_vcmp:0}
 	-Dmaven.compiler.release=8 \
 %endif
+    -Dproject.build.outputTimestamp=$(date -u -d @${SOURCE_DATE_EPOCH:-$(date +%%s)} +%%Y-%%m-%%dT%%H:%%M:%%SZ) \
     -Dsource=8
 
 %if %{without runtime} &&  %{without bootstrap}