1 files changed, 1 insertions, 1 deletions
diff --git a/disml.opam b/disml.opam
index 3ffd4fb..e2c0f04 100644
--- a/disml.opam
+++ b/disml.opam
@@ -27,7 +27,7 @@ depends: [
   "core" {>= "v0.11.3"}
   "decompress" {>= "0.8"}
   "odoc" {with-doc & >= "1.3.0"}
-  "ppx_deriving_yojson" {>= "3.1"}
+  "ppx_deriving_yojson" {>= "3.3"}
   "ppx_sexp_conv" {>= "v0.11.2"}
   "websocket-async" {>= "2.12"}
   "yojson" {>= "1.6.0"}