diff --git a/pkgs/development/compilers/unison/default.nix b/pkgs/development/compilers/unison/default.nix
index f9f1934bb566..7afdd45c459d 100644
--- a/pkgs/development/compilers/unison/default.nix
+++ b/pkgs/development/compilers/unison/default.nix
@@ -11,17 +11,17 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "unison-code-manager";
-  version = "0.5.17";
+  version = "0.5.19";
 
   src = if stdenv.isDarwin then
     fetchurl {
       url = "https://github.com/unisonweb/unison/releases/download/release/${finalAttrs.version}/ucm-macos.tar.gz";
-      hash = "sha256-ymnioW+phbwIshs8DZupfe14oPUuunxSsT8rmifh914=";
+      hash = "sha256-//bjpmW45BqBHmBIj2uMahYQYjhNJ8hvGh+O/7oYQOk=";
     }
   else
     fetchurl {
       url = "https://github.com/unisonweb/unison/releases/download/release/${finalAttrs.version}/ucm-linux.tar.gz";
-      hash = "sha256-vaK7dKkjCPCfEb9GvkOiJ3jY/Jxb31sf98de3WTMG/A=";
+      hash = "sha256-3WyiV6mIuo5GDpDK/KdWMvj22sZ3uph15u3v3TX5YZA=";
     };
 
   # The tarball is just the prebuilt binary, in the archive root.