diff --git a/config.yaml b/config.yaml
index a34fcf5c..f0022e60 100644
--- a/config.yaml
+++ b/config.yaml
@@ -196,12 +196,12 @@ params:
 
     # Enable this to create flowcharts using shortcodes.
     flowchart:
-      enable: false
+      enable: true
       services:
         # Uncomment for `mermaid` shortcode.
         mermaid:
           # For config options, see: https://mermaid-js.github.io/mermaid/#/Setup?id=configuration
-          # theme: dark
+          theme: forest
 
     # Enable this to create mathematic expressions using `$$` blocks
     math: