diff --git a/pkgs/development/tools/omnisharp-roslyn/default.nix b/pkgs/development/tools/omnisharp-roslyn/default.nix
index 784895845e52..310ef0be1517 100644
--- a/pkgs/development/tools/omnisharp-roslyn/default.nix
+++ b/pkgs/development/tools/omnisharp-roslyn/default.nix
@@ -7,11 +7,11 @@
 stdenv.mkDerivation rec {
 
   pname = "omnisharp-roslyn";
-  version = "1.32.19";
+  version = "1.34.11";
   
   src = fetchurl {
     url = "https://github.com/OmniSharp/omnisharp-roslyn/releases/download/v${version}/omnisharp-mono.tar.gz";
-    sha256 = "0flmijar7ih9wp2i585035zhgwpqymr2y778x841bpgv412kxgpz";
+    sha256 = "0j55jrji7ya0pm91hfmyd9s6lkl35xbybr81a1gka90mlyp0gx63";
   };
 
   nativeBuildInputs = [ makeWrapper ];