diff --git a/pkgs/development/ocaml-modules/iri/default.nix b/pkgs/development/ocaml-modules/iri/default.nix
index 8d7b3f6893fe..54db34bc9740 100644
--- a/pkgs/development/ocaml-modules/iri/default.nix
+++ b/pkgs/development/ocaml-modules/iri/default.nix
@@ -4,7 +4,7 @@
 
 buildDunePackage rec {
   pname = "iri";
-  version = "0.7.0";
+  version = "1.0.0";
 
   minimalOCamlVersion = "4.12";
 
@@ -13,7 +13,7 @@ buildDunePackage rec {
     owner = "zoggy";
     repo = "ocaml-iri";
     rev = version;
-    hash = "sha256-Mkg7kIIVpKbeWUras1RqtJsRx2Q3dBnm4QqSMJFweF8=";
+    hash = "sha256-6Q7qPezmdcO6JSevWl55XAxFuIROZNDrMkYw8VRR7qg=";
   };
 
   propagatedBuildInputs = [ sedlex uunf uutf ];