diff --git a/Dockerfile b/Dockerfile
index c482b0a..084f04b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM ubuntu:18.04
 
-ENV FACTOR_VERSION=0.98 TESTEST_VERSION=2.1
+ENV FACTOR_VERSION=0.99 TESTEST_VERSION=2.1
 ENV LANG=C.UTF-8
 
 RUN set -ex; \