diff --git a/schema/index.yaml b/schema/index.yaml
index 3bc2208..6bcd443 100644
--- a/schema/index.yaml
+++ b/schema/index.yaml
@@ -35,6 +35,12 @@ $defs:
           - hackathon
       confirmed:
         type: boolean
+      tags:
+        type: array
+        items:
+          type: string
+          enum:
+            - sfe
       date:
         type: string
       days:
diff --git a/src/events/index.yaml b/src/events/index.yaml
index 5292a06..0c4d357 100644
--- a/src/events/index.yaml
+++ b/src/events/index.yaml
@@ -116,6 +116,7 @@
 
 - id: w3pm-ber1
   type: meetup
+  tags: [ sfe ]
   date: "2024-05-22"
   city: Berlin
   country: de