diff --git a/pkgs/development/libraries/sentencepiece/default.nix b/pkgs/development/libraries/sentencepiece/default.nix
index f6969dcdb6f0..412268654213 100644
--- a/pkgs/development/libraries/sentencepiece/default.nix
+++ b/pkgs/development/libraries/sentencepiece/default.nix
@@ -9,13 +9,13 @@
 
 stdenv.mkDerivation rec {
   pname = "sentencepiece";
-  version = "0.1.90";
+  version = "0.1.91";
 
   src = fetchFromGitHub {
     owner = "google";
     repo = pname;
     rev = "v${version}";
-    sha256 = "10y16qkr2ibn8synmyzgwcbkszyfys1v0dx75p3mayh02yif4dx2";
+    sha256 = "1yg55h240iigjaii0k70mjb4sh3mgg54rp2sz8bx5glnsjwys5s3";
   };
 
   nativeBuildInputs = [ cmake ] ++ lib.optional withGPerfTools gperftools;