diff --git a/binder/postBuild b/binder/postBuild
index f3d0a61f6a9ccb752ab410f124805f0b93c2b95d..2664d8dda9b3d40b64dd66527a61544cafa428ca 100755
--- a/binder/postBuild
+++ b/binder/postBuild
@@ -5,7 +5,7 @@ set -o nounset
 set -o pipefail
 set -o verbose
 
-PROB2_JUPYTER_VERSION="1.1.0"
+PROB2_JUPYTER_VERSION="1.2.0"
 JAR_NAME="prob2-jupyter-kernel-${PROB2_JUPYTER_VERSION}-all.jar"
 
 wget "https://www3.hhu.de/stups/downloads/prob2-jupyter/${JAR_NAME}"