diff --git a/config/config.exs b/config/config.exs
index 7a2472555..b21165f62 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -15,7 +15,6 @@ config :mobilizon, :instance,
   description:
     System.get_env("MOBILIZON_INSTANCE_DESCRIPTION") ||
       "Change this to a proper description of your instance",
-  version: "1.0.0-dev",
   hostname: System.get_env("MOBILIZON_INSTANCE_HOST") || "localhost",
   registrations_open: System.get_env("MOBILIZON_INSTANCE_REGISTRATIONS_OPEN") || false,
   registration_email_whitelist: [],
diff --git a/lib/mobilizon/config.ex b/lib/mobilizon/config.ex
index 459c80267..80c616447 100644
--- a/lib/mobilizon/config.ex
+++ b/lib/mobilizon/config.ex
@@ -13,7 +13,7 @@ defmodule Mobilizon.Config do
   def instance_description, do: instance_config()[:description]
 
   @spec instance_version :: String.t()
-  def instance_version, do: instance_config()[:version]
+  def instance_version, do: Mix.Project.config()[:version]
 
   @spec instance_hostname :: String.t()
   def instance_hostname, do: instance_config()[:hostname]