diff --git a/pkgs/development/tools/ocaml/cppo/default.nix b/pkgs/development/tools/ocaml/cppo/default.nix
index d695fab420e0..b425dc1ab83b 100644
--- a/pkgs/development/tools/ocaml/cppo/default.nix
+++ b/pkgs/development/tools/ocaml/cppo/default.nix
@@ -26,18 +26,16 @@ in
 
 if lib.versionAtLeast ocaml.version "4.02" then
 
-  buildDunePackage rec {
-    inherit pname;
-    version = "1.6.9";
+buildDunePackage rec {
+  inherit pname;
+  version = "1.8.0";
 
-    duneVersion = "3";
-
-    src = fetchFromGitHub {
-      owner = "ocaml-community";
-      repo = pname;
-      rev = "v${version}";
-      sha256 = "sha256-NdN2QnVRfRq9hEcSAnO2Wha7icDlf2Zg4JQqoEWmErE=";
-    };
+  src = fetchFromGitHub {
+    owner = "ocaml-community";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-+HnAGM+GddYJK0RCvKrs+baZS+1o8Yq+/cVa3U3nFWg=";
+  };
 
     doCheck = true;