diff --git a/content/activities/project-night.yaml b/content/activities/project-night.yaml
new file mode 100644
index 0000000..baa1827
--- /dev/null
+++ b/content/activities/project-night.yaml
@@ -0,0 +1,6 @@
+title: Project Night
+description: A weekly virtual gathering to work on our personal projects, and share learnings. Message @aberkowitz your email for an invite.
+link: "slack://channel?team=T0A0T7A5Q&id=D3KKP1X7A"
+color: "#735FFF"
+order: 6
+status: ongoing
diff --git a/src/content.config.ts b/src/content.config.ts
index 1aa2e07..201d22e 100644
--- a/src/content.config.ts
+++ b/src/content.config.ts
@@ -20,7 +20,7 @@ const activities = defineCollection({
   schema: z.object({
     title: z.string().min(2),
     description: z.string().min(10),
-    link: z.string().optional().refine(v => !v || v.startsWith('/') || v.startsWith('http'), {
+    link: z.string().optional().refine(v => !v || v.startsWith('/') || v.startsWith('http') || v.startsWith('slack'), {
       message: 'link must be a relative path or full URL',
     }),
     color: z.string().regex(/^#[0-9a-fA-F]{6}$/),