diff --git a/README.md b/README.md
index 971874c71a..f7ba55d84a 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,8 @@ Necessary steps in order to run SCION:
 0. Install required packages with dependencies:
 
 ```sh
-$ sudo apt-get install python python3 python-dev python3-dev python3-pip screen
-$ sudo pip3 install bitstring python-pytun pydblite pygments
+$ sudo apt-get install python python3 python-dev python3-dev python3-pip screen zookeeperd
+$ sudo pip3 install bitstring python-pytun pydblite pygments pycrypto kazoo
 $ sudo pip2 install supervisor==3.1.3
 $ sudo pip2 install supervisor-quick
 ```
diff --git a/scion.sh b/scion.sh
index 219ab75a42..8d98c928b0 100755
--- a/scion.sh
+++ b/scion.sh
@@ -16,7 +16,7 @@ cmd_init() {
 
 cmd_topology() {
     echo "Create topology, configuration, and execution files."
-    mkdir -p logs
+    mkdir -p logs traces
     cd topology/
     PYTHONPATH=../ python3 generator.py $1
 }