diff --git a/pkgs/development/ocaml-modules/mrmime/default.nix b/pkgs/development/ocaml-modules/mrmime/default.nix
index b9a72244300c..c7fa461a364a 100644
--- a/pkgs/development/ocaml-modules/mrmime/default.nix
+++ b/pkgs/development/ocaml-modules/mrmime/default.nix
@@ -26,11 +26,11 @@
 
 buildDunePackage rec {
   pname = "mrmime";
-  version = "0.6.1";
+  version = "0.7.0";
 
   src = fetchurl {
     url = "https://github.com/mirage/mrmime/releases/download/v${version}/mrmime-${version}.tbz";
-    hash = "sha256-Dzsr7xPzu5RIzIdubF4OAAjHJY7CdBVnHRZxQbcCsBY=";
+    hash = "sha256-w23xtro9WgyLLwqdwfqLMN/ZDqwpvFcEvurbsqnsJLc=";
   };
 
   propagatedBuildInputs = [