diff --git a/apps/client/.env.production b/apps/client/.env.production
index dc6392a2f..af979f2a0 100644
--- a/apps/client/.env.production
+++ b/apps/client/.env.production
@@ -1 +1,6 @@
-VITE_CKEDITOR_ENABLE_INSPECTOR=false
\ No newline at end of file
+VITE_CKEDITOR_ENABLE_INSPECTOR=false
+
+# The development license key for premium CKEditor features.
+# Note: This key must only be used for the Trilium Notes project.
+# Expires on: 2025-09-13
+VITE_CKEDITOR_KEY=eyJhbGciOiJFUzI1NiJ9.eyJleHAiOjE3NTc3MjE1OTksImp0aSI6ImFiN2E0NjZmLWJlZGMtNDNiYy1iMzU4LTk0NGQ0YWJhY2I3ZiIsImRpc3RyaWJ1dGlvbkNoYW5uZWwiOlsic2giLCJkcnVwYWwiXSwid2hpdGVMYWJlbCI6dHJ1ZSwiZmVhdHVyZXMiOlsiRFJVUCIsIkNNVCIsIkRPIiwiRlAiLCJTQyIsIlRPQyIsIlRQTCIsIlBPRSIsIkNDIiwiTUYiLCJTRUUiLCJFQ0giLCJFSVMiXSwidmMiOiI1MzlkOWY5YyJ9.2rvKPql4hmukyXhEtWPZ8MLxKvzPIwzCdykO653g7IxRRZy2QJpeRszElZx9DakKYZKXekVRAwQKgHxwkgbE_w
\ No newline at end of file