diff --git a/pkgs/development/tools/analysis/flow/default.nix b/pkgs/development/tools/analysis/flow/default.nix
index 0827807afef..b011cb0b918 100644
--- a/pkgs/development/tools/analysis/flow/default.nix
+++ b/pkgs/development/tools/analysis/flow/default.nix
@@ -1,14 +1,14 @@
 { stdenv, fetchFromGitHub, ocamlPackages, cf-private, CoreServices }:
 
 stdenv.mkDerivation rec {
-  version = "0.90.0";
+  version = "0.91.0";
   name = "flow-${version}";
 
   src = fetchFromGitHub {
     owner  = "facebook";
     repo   = "flow";
     rev    = "refs/tags/v${version}";
-    sha256 = "12y34l4nhcmdcv91gzdrxw0cvd8w0cg69c5km1nkydgayk82a3x2";
+    sha256 = "14snr65pbnczkv49lmhgyjzlgrrlfwsxkd7g6xbv9y5xl4sp0309";
   };
 
   installPhase = ''