diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2b2d73b..fdc39fc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required (VERSION 3.6)
 project (mastorss
-         VERSION 0.8.5
+         VERSION 0.8.6
          LANGUAGES CXX
 )
 
diff --git a/src/config.cpp b/src/config.cpp
index ade8457..6676219 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -165,7 +165,7 @@ std::uint16_t read_config(string &instance, string &access_token, string &feedur
         {
             interval = "60";
         }
-        config[profile]["interval"] = std::stoul(interval);
+        config[profile]["interval"] = Json::Value::UInt64(std::stoul(interval));
         config_changed = true;
     }
     if (config_changed)