diff --git a/pkgs/development/tools/fsautocomplete/default.nix b/pkgs/development/tools/fsautocomplete/default.nix
index caba7da6411c..21ab0a93ab20 100644
--- a/pkgs/development/tools/fsautocomplete/default.nix
+++ b/pkgs/development/tools/fsautocomplete/default.nix
@@ -5,13 +5,13 @@ let
 in
 buildDotnetModule rec {
   pname = "fsautocomplete";
-  version = "0.64.1";
+  version = "0.66.1";
 
   src = fetchFromGitHub {
     owner = "fsharp";
     repo = "FsAutoComplete";
     rev = "v${version}";
-    sha256 = "sha256-/1XJ09NKOlTjBLe3PvAceIIhk1AiSXenBOFjERKDZko=";
+    sha256 = "sha256-9kuGteoWbYoqgFA11qH+MEjhLMk/23bXXiGG8Lsr1MA=";
   };
 
   nugetDeps = ./deps.nix;