diff --git a/lua/cp/cache.lua b/lua/cp/cache.lua
index 5b76f3d..ecb30c5 100644
--- a/lua/cp/cache.lua
+++ b/lua/cp/cache.lua
@@ -89,7 +89,7 @@ function M.load()
 end
 
 function M.save()
-  local ok, err = pcall(vim.fn.mkdir, vim.fn.fnamemodify(cache_file, ':h'), 'p')
+  local ok, _ = pcall(vim.fn.mkdir, vim.fn.fnamemodify(cache_file, ':h'), 'p')
   if not ok then
     vim.schedule(function()
       vim.fn.mkdir(vim.fn.fnamemodify(cache_file, ':h'), 'p')
diff --git a/lua/cp/pickers/init.lua b/lua/cp/pickers/init.lua
index 75ed6af..6cea2e0 100644
--- a/lua/cp/pickers/init.lua
+++ b/lua/cp/pickers/init.lua
@@ -2,7 +2,6 @@ local M = {}
 
 local cache = require('cp.cache')
 local logger = require('cp.log')
-local scraper = require('cp.scraper')
 local utils = require('cp.utils')
 
 ---@class cp.PlatformItem
diff --git a/lua/cp/runner/run.lua b/lua/cp/runner/run.lua
index 33814ab..e4ac669 100644
--- a/lua/cp/runner/run.lua
+++ b/lua/cp/runner/run.lua
@@ -86,7 +86,7 @@ end
 ---@param input_file string
 ---@param expected_file string
 ---@return TestCase[]
-local function parse_test_cases_from_files(input_file, expected_file)
+local function parse_test_cases_from_files(input_file, _)
   local base_name = vim.fn.fnamemodify(input_file, ':r')
   local test_cases = {}
 
diff --git a/lua/cp/setup.lua b/lua/cp/setup.lua
index 642aca3..9b7afbb 100644
--- a/lua/cp/setup.lua
+++ b/lua/cp/setup.lua
@@ -182,7 +182,6 @@ end
 
 function M.scrape_remaining_problems(platform, contest_id, problems)
   cache.load()
-  local config = config_module.get_config()
   local missing_problems = {}
 
   for _, prob in ipairs(problems) do
@@ -227,8 +226,8 @@ function M.navigate_problem(direction, language)
 
   local problems = contest_data.problems
   local current_index = nil
-  for i, problem in ipairs(problems) do
-    if problem.id == current_problem_id then
+  for i, prob in ipairs(problems) do
+    if prob.id == current_problem_id then
       current_index = i
       break
     end