diff --git a/Makefile b/Makefile
index ce8a1b51a..359459986 100644
--- a/Makefile
+++ b/Makefile
@@ -43,7 +43,7 @@ setup-githooks: ## Setup githooks
 .PHONY: pin
 pin: ## Pin dependencies
 	@opam pin add reason.dev "https://github.com/reasonml/reason.git#f92f7ecc228d19ebf4d9d0214792da7b45472766" -y
-	@opam pin add server-reason-react.dev "https://github.com/ml-in-barcelona/server-reason-react.git#d1cca36198515d0f7c52f21eb39e6b3b180537a2" -y
+	@opam pin add server-reason-react.dev "https://github.com/ml-in-barcelona/server-reason-react.git#b9abcdf41d3705e8169dd4c4184c3247cb840caa" -y
 
 .PHONY: create-switch
 create-switch: ## Create opam switch
diff --git a/packages/css/native/dune b/packages/css/native/dune
index cac26f247..2c6ad38b8 100644
--- a/packages/css/native/dune
+++ b/packages/css/native/dune
@@ -6,4 +6,4 @@
  (wrapped false)
  (libraries server-reason-react.js server-reason-react.belt)
  (preprocess
-  (pps server-reason-react.melange.ppx)))
+  (pps server-reason-react.melange_ppx)))