diff --git a/pkgs/development/libraries/botan/2.0.nix b/pkgs/development/libraries/botan/2.0.nix
index dec08d17177..890f3789761 100644
--- a/pkgs/development/libraries/botan/2.0.nix
+++ b/pkgs/development/libraries/botan/2.0.nix
@@ -1,9 +1,9 @@
 { callPackage, ... } @ args:
 
 callPackage ./generic.nix (args // {
-  baseVersion = "2.3";
+  baseVersion = "2.6";
   revision = "0";
-  sha256 = "0z6lwv28hxnfkhd4s03cb4cdm1621bsswc2h88z4qslqwpz71y9r";
+  sha256 = "1iawmymmnp5j2mcjj70slivn6bgg8gbpppldc1rjqw5sbdan3wn1";
   postPatch = ''
     sed -e 's@lang_flags "@&--std=c++11 @' -i src/build-data/cc/{gcc,clang}.txt
   '';