diff --git a/busytown.sh b/busytown.sh
index a55ac1f..ff420d5 100755
--- a/busytown.sh
+++ b/busytown.sh
@@ -21,7 +21,7 @@
     esac
 }
 
-readonly R4A_BUILD_NUMBER=1.4.0
+readonly R4A_BUILD_NUMBER=1.4-M3
 function copy_jar_into_maven_repo() {
     local SOURCE_JAR="$1"
     local MODULE_NAME="$2"
@@ -94,7 +94,7 @@
 tar cf $OUT_DIR/m2.tar -C $OUT_DIR m2
 mv $OUT_DIR/m2.tar $DIST_DIR
 
-readonly GMAVEN_ARTIFACT_NAME=1.4.0-dev-withExperimentalGoogleExtensions-20200714
+readonly GMAVEN_ARTIFACT_NAME=1.4.0-dev-withExperimentalGoogleExtensions-20200720
 pushd "$OUT_DIR/m2/org/jetbrains/kotlin/kotlin-compiler-embeddable"
 $PROG_DIR/dist/kotlinc/bin/kotlinc -script -cp "$PROG_DIR/reversion/lib/jdom2/jdom-2.0.6.jar" "$PROG_DIR/reversion/reversion.kts" . "$R4A_BUILD_NUMBER" "$GMAVEN_ARTIFACT_NAME"
 zip -r "kotlin-compiler-embeddable-$GMAVEN_ARTIFACT_NAME.zip" $GMAVEN_ARTIFACT_NAME