diff --git a/conferences/2026/opensource.json b/conferences/2026/opensource.json
index 485a81dd6..b13b3c657 100644
--- a/conferences/2026/opensource.json
+++ b/conferences/2026/opensource.json
@@ -283,6 +283,19 @@
     "cfpUrl": "https://opentechday.de/propose",
     "cfpEndDate": "2026-05-31"
   },
+  {
+    "name": "bitcoin++ payments edition",
+    "url": "https://btcpp.dev/berlin26",
+    "startDate": "2026-10-01",
+    "endDate": "2026-10-03",
+    "city": "Berlin",
+    "country": "Germany",
+    "online": false,
+    "locales": "EN",
+    "cfpUrl": "https://btcpp.dev/talk/berlin26",
+    "cfpEndDate": "2026-08-17",
+    "twitter": "@btcplusplus"
+  },
   {
     "name": "Joomla! World Conference",
     "url": "https://conference.joomla.org",