diff --git a/pkgs/by-name/bw/bwbasic/package.nix b/pkgs/by-name/bw/bwbasic/package.nix
index 6f5d2d25d739..9b3c6a441f93 100644
--- a/pkgs/by-name/bw/bwbasic/package.nix
+++ b/pkgs/by-name/bw/bwbasic/package.nix
@@ -1,18 +1,18 @@
 {
   lib,
-  gccStdenv,
+  stdenv,
   dos2unix,
   fetchurl,
   unzip,
 }:
 
-gccStdenv.mkDerivation (finalAttrs: {
+stdenv.mkDerivation (finalAttrs: {
   pname = "bwbasic";
-  version = "3.30";
+  version = "3.40";
 
   src = fetchurl {
     url = "mirror://sourceforge/project/bwbasic/bwbasic/version%20${finalAttrs.version}/bwbasic-${finalAttrs.version}.zip";
-    hash = "sha256-Cab8/DvYjw6K8c46ZTJImISa0vJt5UeFDB+ZTSVfkGQ=";
+    hash = "sha256-tWiUIqCdBarhFDSX0iV55VxOEh7iuAbnOLSDuMAAog8=";
   };
 
   nativeBuildInputs = [
@@ -20,16 +20,18 @@ gccStdenv.mkDerivation (finalAttrs: {
     unzip
   ];
 
-  unpackPhase = ''
-    unzip $src
-  '';
+  sourceRoot = ".";
 
   postPatch = ''
     dos2unix configure
     patchShebangs configure
     chmod +x configure
+    substituteInPlace bwbasic.h \
+      --replace-fail "extern int putenv (const char *buffer)" "extern int putenv (char *buffer)"
   '';
 
+  env.NIX_CFLAGS_COMPILE = "-std=c89";
+
   hardeningDisable = [ "format" ];
 
   preInstall = ''