diff --git a/CHANGELOG.md b/CHANGELOG.md
index e8405bb..c581c19 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## UNRELEASED
+## Changed
+* Remove warnings about GITHUB_INSECURE and GITHUB_PATH
+
 ## [0.2.19] 2021-01-05
 ## Added
 * There is a new flag `--no-colors` for avoiding colors in the output
diff --git a/src/Niv/Cli.hs b/src/Niv/Cli.hs
index 22ff4ee..56cb298 100644
--- a/src/Niv/Cli.hs
+++ b/src/Niv/Cli.hs
@@ -24,7 +24,6 @@ import Data.Text.Extended
 import Data.Version (showVersion)
 import Niv.Cmd
 import Niv.Git.Cmd
-import Niv.GitHub.API (warnGitHubEnvVars)
 import Niv.GitHub.Cmd
 import Niv.Local.Cmd
 import Niv.Logger
@@ -53,7 +52,6 @@ li = liftIO
 
 cli :: IO ()
 cli = do
-  warnGitHubEnvVars
   ((fsj, colors), nio) <-
     execParserPure' Opts.defaultPrefs opts <$> getArgs
       >>= Opts.handleParseResult
diff --git a/src/Niv/GitHub/API.hs b/src/Niv/GitHub/API.hs
index f56b95e..4ccd21f 100644
--- a/src/Niv/GitHub/API.hs
+++ b/src/Niv/GitHub/API.hs
@@ -15,7 +15,6 @@ import qualified Data.Text as T
 import qualified Data.Text.Encoding as T
 import Data.Text.Extended
 import qualified Network.HTTP.Simple as HTTP
-import Niv.Logger
 import System.Environment (lookupEnv)
 import System.Exit (exitFailure)
 import System.IO.Unsafe (unsafePerformIO)
@@ -135,29 +134,6 @@ For more information on rate-limiting, see
 
 |]
 
--- Some environment variables may have different meanings (see for instance
--- https://github.com/nmattia/niv/issues/280)
--- For ambiguous ones, we prepend NIV_.
---
-warnGitHubEnvVars :: IO ()
-warnGitHubEnvVars =
-  mapM_
-    warnEnvVar
-    [ "GITHUB_INSECURE",
-      "GITHUB_PATH"
-    ]
-  where
-    warnEnvVar vn = lookupEnv (T.unpack vn) >>= \case
-      Nothing -> pure ()
-      Just {} -> do
-        twarn $
-          T.unwords
-            [ "The environment variable",
-              vn,
-              "was renamed to",
-              "NIV_" <> vn
-            ]
-
 -- | Like lookupEnv "foo" but also looks up "NIV_foo"
 lookupEnv' :: String -> IO (Maybe String)
 lookupEnv' vn = lookupEnv vn >>= \case