diff --git a/pkgs/development/libraries/libwebsockets/default.nix b/pkgs/development/libraries/libwebsockets/default.nix
index 3edde8434f02..ddafc9bc6594 100644
--- a/pkgs/development/libraries/libwebsockets/default.nix
+++ b/pkgs/development/libraries/libwebsockets/default.nix
@@ -45,7 +45,7 @@ rec {
   };
 
   libwebsockets_4_0 = generic {
-    version = "4.0.0";
-    sha256 = "1kba64whi5lrl2y83mnqp2cqry5j28fkzlqy9x2ki6zmryh2574j";
+    version = "4.0.1";
+    sha256 = "1pf7km0w5q7dqlwcwqizdpfqgg10prfq8g2c093f5nghwsfv8mmf";
   };
 }