diff --git a/README.md b/README.md
index 922015d..e524f8a 100644
--- a/README.md
+++ b/README.md
@@ -230,6 +230,11 @@ The source name.
 
 The source customization options. It is defined by each source.
 
+#### sources[number].priority (type: number|nil)
+
+The manually specified source priority.
+If you don't specifies it, The source priority will determine by the default algorithm (see `sorting.priority_weight`).
+
 #### sources[number].keyword_pattern (type: string)
 
 The source specific keyword_pattern for override.
diff --git a/lua/cmp/menu.lua b/lua/cmp/menu.lua
index 4f74292..f2d3d56 100644
--- a/lua/cmp/menu.lua
+++ b/lua/cmp/menu.lua
@@ -89,7 +89,7 @@ menu.update = function(self, ctx, sources)
     if s.offset <= offset then
       if not has_triggered_by_symbol_source or s.is_triggered_by_symbol then
         -- source order priority bonus.
-        local priority = (#sources - (i - 1)) * config.get().sorting.priority_weight
+        local priority = s:get_config().priority or ((#sources - (i - 1)) * config.get().sorting.priority_weight)
 
         for _, e in ipairs(s:get_entries(ctx)) do
           e.score = e.score + priority
diff --git a/lua/cmp/types/cmp.lua b/lua/cmp/types/cmp.lua
index aa68f2a..c79386c 100644
--- a/lua/cmp/types/cmp.lua
+++ b/lua/cmp/types/cmp.lua
@@ -100,6 +100,7 @@ cmp.PreselectMode.None = 'none'
 ---@class cmp.SourceConfig
 ---@field public name string
 ---@field public opts table
+---@field public priority number|nil
 ---@field public keyword_pattern string
 ---@field public keyword_length number
 ---@field public max_item_count number