diff --git a/.gitignore b/.gitignore
index c96efd1..8673b67 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,6 @@
 
 # ignore dependent chart dirs
 charts
+
+# IntelliJ
+.idea
diff --git a/mininet/Chart.yaml b/mininet/Chart.yaml
index 0526f6b..0a5f10e 100644
--- a/mininet/Chart.yaml
+++ b/mininet/Chart.yaml
@@ -18,4 +18,4 @@
 appVersion: 1.1.0
 description: A Helm chart for Mininet
 name: mininet
-version: 1.2.0
+version: 1.2.1
diff --git a/mininet/templates/deployment.yaml b/mininet/templates/deployment.yaml
index 25a0031..9ad2e5b 100644
--- a/mininet/templates/deployment.yaml
+++ b/mininet/templates/deployment.yaml
@@ -41,7 +41,7 @@
           image: "{{ .Values.global.registry }}{{ .Values.images.mininet.repository }}:{{ tpl .Values.images.mininet.tag . }}"
           imagePullPolicy: {{ .Values.images.mininet.pullPolicy }}
 {{- if gt ($.Values.mnStratumSwitchCount|int) 0 }}
-          command: ["python"]
+          command: ["python3"]
 {{- end }}
           args: [{{ .Values.topoScript }}]
           stdin: true