diff --git a/ogc/bblocks/entrypoint.py b/ogc/bblocks/entrypoint.py
index 09b91ff..f18269f 100644
--- a/ogc/bblocks/entrypoint.py
+++ b/ogc/bblocks/entrypoint.py
@@ -269,6 +269,8 @@
             viewer_config['showImported'] = raw_viewer['show-imported-depth']
         if raw_viewer.get('view-plugins'):
             viewer_config['viewPlugins'] = raw_viewer['view-plugins']
+        if raw_viewer.get('dependency-graph-height'):
+            viewer_config['dependencyGraphHeight'] = raw_viewer['dependency-graph-height']
 
     bb_local_config_file = Path('bblocks-config-local.yml')
     local_url_mappings = None
diff --git a/ogc/bblocks/schemas/bblocks-config.schema.yaml b/ogc/bblocks/schemas/bblocks-config.schema.yaml
index a0600d5..4058518 100644
--- a/ogc/bblocks/schemas/bblocks-config.schema.yaml
+++ b/ogc/bblocks/schemas/bblocks-config.schema.yaml
@@ -114,6 +114,17 @@ properties:
           snippets or transform outputs.
         items:
           $ref: '#/$defs/view-plugin-entry'
+      dependency-graph-height:
+        description: >
+          Default height, in pixels, of the per-building-block dependency graph shown on
+          each Building Block's page. Optional: if omitted, the viewer keeps using its own
+          built-in default (currently 400). The viewer additionally never renders the graph
+          shorter than 200px regardless of this setting, so values below that have no visible
+          effect - the minimum here is only meant to reject clearly-invalid values (e.g. 0 or
+          negative), not to document the viewer's actual effective floor.
+        type: integer
+        minimum: 100
+        default: 400
 
   plugins:
     type: object