diff --git a/light9/web/timeline/timeline-elements.html b/light9/web/timeline/timeline-elements.html
--- a/light9/web/timeline/timeline-elements.html
+++ b/light9/web/timeline/timeline-elements.html
@@ -285,6 +285,7 @@
 <script src="/lib/shortcut/index.js"></script>
 <script src="/lib/async/dist/async.js"></script>
 <script src="/lib/underscore/underscore-min.js"></script>
+<script src="/lib/pixi.js/dist/pixi.min.js"></script>
 <script src="adjustable.js"></script>
 <script src="drawing.js"></script>
 <script src="timeline.js"></script>
diff --git a/makefile b/makefile
--- a/makefile
+++ b/makefile
@@ -72,7 +72,7 @@ tkdnd_build:
 env-mypy/bin/mypy:
 	mkdir -p env-mypy
 	virtualenv -p /usr/bin/python3  env-mypy/
-	env-mypy/bin/pip install mypy==0.510 lxml==3.7.3
+	env-mypy/bin/pip install mypy==0.590 lxml==4.2.1
 
 ### build ###
 
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 coloredlogs==6.0
-colormath==2.1.1
+colormath==3.0.0
 coverage==4.3.4
 cyclone==1.1
 faulthandler==2.6
@@ -33,4 +33,4 @@ typing==3.6.1
 watchdog==0.8.3
 web.py==0.38
 webcolors==1.7
-https://projects.bigasterisk.com/rdfdb/rdfdb-0.4.0.tar.gz
+https://projects.bigasterisk.com/rdfdb/rdfdb-0.5.0.tar.gz