diff --git a/.env.sample b/.env.sample
index c721546..7a98b95 100644
--- a/.env.sample
+++ b/.env.sample
@@ -21,6 +21,9 @@ COMPOSE_FILE="compose.yml"
 
 # The voila version to pin to (can be overriden by requirements.txt)
 VOILA_VERSION=0.4.0
+IPYKERNEL_VERSION=6.19.4
+NOTEBOOK_VERSION=6.5.2
+
 # The directory to run voila from.
 VOILA_DIRECTORY=/data
 # Additional options to pass to voila.
diff --git a/abra.sh b/abra.sh
index e8e878d..a927dd1 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1 +1 @@
-export STARTUP_SH_VERSION=v2
+export STARTUP_SH_VERSION=v3
diff --git a/compose.yml b/compose.yml
index 679759c..f435ab4 100644
--- a/compose.yml
+++ b/compose.yml
@@ -6,6 +6,8 @@ services:
     image: python:3.10
     environment:
       - VOILA_VERSION
+      - IPYTHON_VERSION
+      - NOTEBOOK_VERSION
       - VOILA_DIRECTORY
       - VOILA_OPTIONS
       - REQUIREMENTS_PATH
diff --git a/startup.sh b/startup.sh
index 71c4e7b..289743a 100755
--- a/startup.sh
+++ b/startup.sh
@@ -1,11 +1,13 @@
 #!/bin/sh
 
-cd $VOILA_DIRECTORY || true
+cd "$VOILA_DIRECTORY" || true
 
 if [-eq "$REQUIREMENTS_PATH" ]; then
     pip install -r "$REQUIREMENTS_PATH"
-else
-    pip install voila==$VOILA_VERSION
 fi
 
+pip freeze |grep voila || pip install voila==VOILA_VERSION
+pip freeze |grep notebook || pip install notebook==NOTEBOOK_VERSION
+pip freeze |grep ipykernel || pip install ipykernel==IPYKERNEL_VERSION
+
 python -mvoila --no-browser --port=80 --Voila.ip=0.0.0.0  --autoreload=True $VOILA_OPTIONS