diff --git a/flexmeasures/data/models/time_series.py b/flexmeasures/data/models/time_series.py
index 1fb19dc1b..15c81ead3 100644
--- a/flexmeasures/data/models/time_series.py
+++ b/flexmeasures/data/models/time_series.py
@@ -3,6 +3,7 @@
 import json
 
 from altair.utils.html import spec_to_html
+from flask import current_app
 from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.orm import Query, Session
 import timely_beliefs as tb
@@ -140,9 +141,13 @@ def chart(
             return spec_to_html(
                 chart_specs,
                 "vega-lite",
-                vega_version="5",
-                vegaembed_version="6.17.0",
-                vegalite_version="5.0.0",
+                vega_version=current_app.config.get("FLEXMEASURES_JS_VERSIONS").vega,
+                vegaembed_version=current_app.config.get(
+                    "FLEXMEASURES_JS_VERSIONS"
+                ).vegaembed,
+                vegalite_version=current_app.config.get(
+                    "FLEXMEASURES_JS_VERSIONS"
+                ).vegalite,
             )
         return json.dumps(chart_specs)
 
diff --git a/flexmeasures/ui/templates/views/sensors.html b/flexmeasures/ui/templates/views/sensors.html
index d9f5d00c6..e395c4cf2 100644
--- a/flexmeasures/ui/templates/views/sensors.html
+++ b/flexmeasures/ui/templates/views/sensors.html
@@ -13,9 +13,9 @@
       </div>
 
     <script src="https://d3js.org/d3.v6.min.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/vega@5"></script>
-    <script src="https://cdn.jsdelivr.net/npm/vega-lite@5.0.0"></script>
-    <script src="https://cdn.jsdelivr.net/npm/vega-embed@6.17.0"></script>
+    <script src="https://cdn.jsdelivr.net/npm/vega@{{ js_versions.vega }}"></script>
+    <script src="https://cdn.jsdelivr.net/npm/vega-lite@{{ js_versions.vegalite }}"></script>
+    <script src="https://cdn.jsdelivr.net/npm/vega-embed@{{ js_versions.vegaembed }}"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/jstimezonedetect/1.0.7/jstz.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/litepicker/dist/litepicker.js"></script>
     <script src="https://cdn.jsdelivr.net/npm/litepicker/dist/plugins/ranges.js"></script>
diff --git a/flexmeasures/ui/utils/view_utils.py b/flexmeasures/ui/utils/view_utils.py
index 6ee924e06..c14ad5f13 100644
--- a/flexmeasures/ui/utils/view_utils.py
+++ b/flexmeasures/ui/utils/view_utils.py
@@ -84,6 +84,7 @@ def render_flexmeasures_template(html_filename: str, **variables):
     variables["user_name"] = (
         current_user.is_authenticated and current_user.username or ""
     )
+    variables["js_versions"] = current_app.config.get("FLEXMEASURES_JS_VERSIONS")
 
     return render_template(html_filename, **variables)
 
diff --git a/flexmeasures/utils/config_defaults.py b/flexmeasures/utils/config_defaults.py
index c84ebe111..ad4bbfd5c 100644
--- a/flexmeasures/utils/config_defaults.py
+++ b/flexmeasures/utils/config_defaults.py
@@ -98,6 +98,12 @@ class Config(object):
     FLEXMEASURES_REDIS_PORT: int = 6379
     FLEXMEASURES_REDIS_DB_NR: int = 0  # Redis per default has 16 databases, [0-15]
     FLEXMEASURES_REDIS_PASSWORD: Optional[str] = None
+    FLEXMEASURES_JS_VERSIONS: dict = dict(
+        vega="5",
+        vegaembed="6.17.0",
+        vegalite="5.0.0",
+        # todo: expand with other js versions used in FlexMeasures
+    )
 
 
 #  names of settings which cannot be None