diff --git a/bauh/commons/util.py b/bauh/commons/util.py
new file mode 100644
index 00000000..31f644b0
--- /dev/null
+++ b/bauh/commons/util.py
@@ -0,0 +1,11 @@
+import collections
+
+
+def deep_update(source: dict, overrides: dict):
+    for key, value in overrides.items():
+        if isinstance(value, collections.Mapping) and value:
+            returned = deep_update(source.get(key, {}), value)
+            source[key] = returned
+        else:
+            source[key] = overrides[key]
+    return source
diff --git a/bauh/gems/web/config.py b/bauh/gems/web/config.py
index 7f154282..e278ba1c 100644
--- a/bauh/gems/web/config.py
+++ b/bauh/gems/web/config.py
@@ -4,19 +4,31 @@ from pathlib import Path
 import yaml
 
 from bauh.api.constants import CONFIG_PATH
+from bauh.commons import util
 from bauh.gems.web import CONFIG_FILE
 
 
-def read_config() -> dict:
+def read_config(update_file: bool = False) -> dict:
+    default_config = {
+        'environment': {
+            'system': False,
+            'electron': {'version': None}
+        }
+    }
     if not os.path.exists(CONFIG_FILE):
-        config = {'environment': {'system': False}}
-
         Path(CONFIG_PATH).mkdir(parents=True, exist_ok=True)
 
         with open(CONFIG_FILE, 'w+') as f:
-            f.write(yaml.dump(config))
+            f.write(yaml.dump(default_config))
+
     else:
         with open(CONFIG_FILE) as f:
-            config = yaml.safe_load(f.read())
+            local_config = yaml.safe_load(f.read())
 
-    return config
+        util.deep_update(default_config, local_config)
+
+        if update_file:
+            with open(CONFIG_FILE, 'w+') as f:
+                f.write(yaml.dump(default_config))
+
+    return default_config
diff --git a/bauh/gems/web/controller.py b/bauh/gems/web/controller.py
index be39ec7d..4cfc496d 100644
--- a/bauh/gems/web/controller.py
+++ b/bauh/gems/web/controller.py
@@ -574,7 +574,7 @@ class WebApplicationManager(SoftwareManager):
 
     def can_work(self) -> bool:
         if BS4_AVAILABLE and LXML_AVAILABLE:
-            config = read_config()
+            config = read_config(update_file=True)
             use_system_env = config['environment']['system']
 
             if not use_system_env:
diff --git a/bauh/gems/web/environment.py b/bauh/gems/web/environment.py
index 93bcb34a..e041aa03 100644
--- a/bauh/gems/web/environment.py
+++ b/bauh/gems/web/environment.py
@@ -236,7 +236,14 @@ class EnvironmentUpdater:
             self.logger.warning('Could not install / update nativefier')
             return
 
-        res = self.install_electron(version=settings['electron']['version'], is_x86_x64_arch=is_x86_x64_arch,
+        electron_version = current_config['environment']['electron']['version']
+
+        if electron_version:
+            self.logger.warning("Using custom Electron version {}".format(electron_version))
+        else:
+            electron_version = settings['electron']['version']
+
+        res = self.install_electron(version=electron_version, is_x86_x64_arch=is_x86_x64_arch,
                                     watcher=handler.watcher if handler else None)
 
         if res: