diff --git a/charts/jupyter-pyspark/Chart.yaml b/charts/jupyter-pyspark/Chart.yaml
index 452e639f..1d8b5d68 100644
--- a/charts/jupyter-pyspark/Chart.yaml
+++ b/charts/jupyter-pyspark/Chart.yaml
@@ -24,7 +24,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.16
+version: 2.1.17
 
 dependencies:
   - name: library-chart
diff --git a/charts/jupyter-pyspark/templates/statefulset.yaml b/charts/jupyter-pyspark/templates/statefulset.yaml
index cc2cf38c..6d0dc9ca 100644
--- a/charts/jupyter-pyspark/templates/statefulset.yaml
+++ b/charts/jupyter-pyspark/templates/statefulset.yaml
@@ -240,6 +240,10 @@ spec:
             - name: DARK_MODE
               value: "true"
             {{- end }}
+            {{- if .Values.service.customPythonEnv }}
+            - name: CUSTOM_PYTHON_ENV
+              value: "true"
+            {{- end }}
           envFrom:
             - secretRef:
                 name: {{ include "library-chart.secretNameToken" . }}
diff --git a/charts/jupyter-pyspark/values.schema.json b/charts/jupyter-pyspark/values.schema.json
index af1e8f9d..4e17eb5e 100644
--- a/charts/jupyter-pyspark/values.schema.json
+++ b/charts/jupyter-pyspark/values.schema.json
@@ -59,6 +59,12 @@
               }
             }
           }
+        },
+        "customPythonEnv": {
+          "title": "custom python environment",
+          "type": "boolean",
+          "description": "Use a custom python environment",
+          "default": false
         }
       }
     },
diff --git a/charts/jupyter-pyspark/values.yaml b/charts/jupyter-pyspark/values.yaml
index f625c15c..9626a789 100644
--- a/charts/jupyter-pyspark/values.yaml
+++ b/charts/jupyter-pyspark/values.yaml
@@ -9,7 +9,7 @@ service:
     custom:
       enabled: false
       version: "inseefrlab/onyxia-jupyter-pyspark:py3.12.6-spark3.5.3"
-
+  customPythonEnv: false
 spark:
   sparkui: false
   configMapName: ""
diff --git a/charts/jupyter-python/Chart.yaml b/charts/jupyter-python/Chart.yaml
index d1baf00e..e3ad04b4 100644
--- a/charts/jupyter-python/Chart.yaml
+++ b/charts/jupyter-python/Chart.yaml
@@ -22,7 +22,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.15
+version: 2.1.16
 
 dependencies:
   - name: library-chart
diff --git a/charts/jupyter-python/templates/statefulset.yaml b/charts/jupyter-python/templates/statefulset.yaml
index 97e719aa..1870c4eb 100644
--- a/charts/jupyter-python/templates/statefulset.yaml
+++ b/charts/jupyter-python/templates/statefulset.yaml
@@ -191,6 +191,10 @@ spec:
             - name: DARK_MODE
               value: "true"
             {{- end }}
+            {{- if .Values.service.customPythonEnv }}
+            - name: CUSTOM_PYTHON_ENV
+              value: "true"
+            {{- end }}
           envFrom:
             - secretRef:
                 name: {{ include "library-chart.secretNameToken" . }}
diff --git a/charts/jupyter-python/values.schema.json b/charts/jupyter-python/values.schema.json
index 988c41a6..36d7a02e 100644
--- a/charts/jupyter-python/values.schema.json
+++ b/charts/jupyter-python/values.schema.json
@@ -59,6 +59,12 @@
               }
             }
           }
+        },
+        "customPythonEnv": {
+          "title": "custom python environment",
+          "type": "boolean",
+          "description": "Use a custom python environment",
+          "default": false
         }
       }
     },
diff --git a/charts/jupyter-python/values.yaml b/charts/jupyter-python/values.yaml
index 09032557..882b8c5d 100644
--- a/charts/jupyter-python/values.yaml
+++ b/charts/jupyter-python/values.yaml
@@ -9,6 +9,7 @@ service:
     custom:
       enabled: false
       version: "inseefrlab/onyxia-jupyter-python:py3.12.6"
+  customPythonEnv: false
 
 security:
   password: "changeme"
diff --git a/charts/vscode-pyspark/Chart.yaml b/charts/vscode-pyspark/Chart.yaml
index 436694c9..c9c67b8b 100644
--- a/charts/vscode-pyspark/Chart.yaml
+++ b/charts/vscode-pyspark/Chart.yaml
@@ -24,7 +24,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.17
+version: 2.1.18
 
 dependencies:
   - name: library-chart
diff --git a/charts/vscode-pyspark/templates/statefulset.yaml b/charts/vscode-pyspark/templates/statefulset.yaml
index d6200f1b..42807160 100644
--- a/charts/vscode-pyspark/templates/statefulset.yaml
+++ b/charts/vscode-pyspark/templates/statefulset.yaml
@@ -237,6 +237,10 @@ spec:
             - name: DARK_MODE
               value: "true"
             {{- end }}
+            {{- if .Values.service.customPythonEnv }}
+            - name: CUSTOM_PYTHON_ENV
+              value: "true"
+            {{- end }}
           envFrom:
             - secretRef:
                 name: {{ include "library-chart.secretNameToken" . }}
diff --git a/charts/vscode-pyspark/values.schema.json b/charts/vscode-pyspark/values.schema.json
index 1115862d..f2b51fd4 100644
--- a/charts/vscode-pyspark/values.schema.json
+++ b/charts/vscode-pyspark/values.schema.json
@@ -59,6 +59,12 @@
               }
             }
           }
+        },
+        "customPythonEnv": {
+          "title": "custom python environment",
+          "type": "boolean",
+          "description": "Use a custom python environment",
+          "default": false
         }
       }
     },
diff --git a/charts/vscode-pyspark/values.yaml b/charts/vscode-pyspark/values.yaml
index 487f0562..59706e0e 100644
--- a/charts/vscode-pyspark/values.yaml
+++ b/charts/vscode-pyspark/values.yaml
@@ -9,6 +9,7 @@ service:
     custom:
       enabled: false
       version: "inseefrlab/onyxia-vscode-pyspark:py3.12.6-spark3.5.3"
+  customPythonEnv: false
 
 spark:
   sparkui: false
diff --git a/charts/vscode-python/Chart.yaml b/charts/vscode-python/Chart.yaml
index 85f95ced..fe0f79a4 100644
--- a/charts/vscode-python/Chart.yaml
+++ b/charts/vscode-python/Chart.yaml
@@ -22,7 +22,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 2.1.16
+version: 2.1.17
 
 dependencies:
   - name: library-chart
diff --git a/charts/vscode-python/templates/statefulset.yaml b/charts/vscode-python/templates/statefulset.yaml
index 2213a404..4d86427c 100644
--- a/charts/vscode-python/templates/statefulset.yaml
+++ b/charts/vscode-python/templates/statefulset.yaml
@@ -177,6 +177,10 @@ spec:
             - name: DARK_MODE
               value: "true"
             {{- end }}
+            {{- if .Values.service.customPythonEnv }}
+            - name: CUSTOM_PYTHON_ENV
+              value: "true"
+            {{- end }}
           envFrom:
             - secretRef:
                 name : {{ include "library-chart.secretNameToken" . }}
diff --git a/charts/vscode-python/values.schema.json b/charts/vscode-python/values.schema.json
index 19badf22..aa294c7c 100644
--- a/charts/vscode-python/values.schema.json
+++ b/charts/vscode-python/values.schema.json
@@ -59,6 +59,12 @@
               }
             }
           }
+        },
+        "customPythonEnv": {
+          "title": "custom python environment",
+          "type": "boolean",
+          "description": "Use a custom python environment",
+          "default": false
         }
       }
     },
diff --git a/charts/vscode-python/values.yaml b/charts/vscode-python/values.yaml
index 83755e34..bce639d0 100644
--- a/charts/vscode-python/values.yaml
+++ b/charts/vscode-python/values.yaml
@@ -9,6 +9,7 @@ service:
     custom:
       enabled: false
       version: "inseefrlab/onyxia-vscode-python:py3.12.6"
+  customPythonEnv: false
 
 security:
   password: "changeme"