diff --git a/pkgs/by-name/sl/slipshow/package.nix b/pkgs/by-name/sl/slipshow/package.nix
index 66d644eb5cb7..7a68b342ad61 100644
--- a/pkgs/by-name/sl/slipshow/package.nix
+++ b/pkgs/by-name/sl/slipshow/package.nix
@@ -9,13 +9,13 @@
 
 ocamlPackages.buildDunePackage rec {
   pname = "slipshow";
-  version = "0.6.0";
+  version = "0.7.0";
 
   src = fetchFromGitHub {
     owner = "panglesd";
     repo = "slipshow";
     tag = "v${version}";
-    hash = "sha256-cmBq9RYjvl355+tV+Nf7XmDzgbOqusCjVrqoC34R5CI=";
+    hash = "sha256-HV4qUp/da0GjZ/KSaE4L/qxdosnOTRcC83zIRigxFSY=";
   };
 
   postPatch = ''
@@ -40,6 +40,7 @@ ocamlPackages.buildDunePackage rec {
     lwt
     magic-mime
     ppx_blob
+    ppx_deriving_yojson
     ppx_sexp_value
     sexplib
   ];