diff --git a/pkgs/development/tools/parsing/bison/default.nix b/pkgs/development/tools/parsing/bison/default.nix
index 357c8ea17cfd..ca422f931da0 100644
--- a/pkgs/development/tools/parsing/bison/default.nix
+++ b/pkgs/development/tools/parsing/bison/default.nix
@@ -7,11 +7,11 @@
 
 stdenv.mkDerivation rec {
   pname = "bison";
-  version = "3.6.4";
+  version = "3.7.1";
 
   src = fetchurl {
     url = "mirror://gnu/${pname}/${pname}-${version}.tar.gz";
-    sha256 = "1s8kmfhg7a58vm65fc977ckp8zspy8diayrcjhs3cgrqnmjdx0w1";
+    sha256 = "04vx6sah3bnr3a5n9knw306sb3y41pjfl7k9ihbsimghkj1m5n8x";
   };
 
   nativeBuildInputs = [ m4 perl ] ++ stdenv.lib.optional stdenv.isSunOS help2man;