diff --git a/Makefile b/Makefile
index 29414dd8..982da621 100644
--- a/Makefile
+++ b/Makefile
@@ -16,10 +16,10 @@ K := $(foreach exec,$(EXECUTABLES),\
 				Please install this executable for everything to work smoothly)))
 
 dependencies-ocaml:
-	opam install . --deps-only --with-doc --with-test --yes
+	opam install . ./doc/catala-dev-dependencies.opam --deps-only --with-doc --with-test --yes
 
 dependencies-ocaml-with-z3:
-	opam install . z3 --deps-only --with-doc --with-test --yes
+	opam install . ./doc/catala-dev-dependencies.opam z3 --deps-only --with-doc --with-test --yes
 
 dependencies-js:
 	$(MAKE) -C $(FRENCH_LAW_JS_LIB_DIR) dependencies
diff --git a/doc/catala-dev-dependencies.opam b/doc/catala-dev-dependencies.opam
new file mode 100644
index 00000000..0a4ff8e3
--- /dev/null
+++ b/doc/catala-dev-dependencies.opam
@@ -0,0 +1,20 @@
+opam-version: "2.0"
+version: "0.6.0"
+synopsis: "Virtual package listing the requirements for a complete Catala dev environment"
+maintainer: ["contact@catala-lang.org"]
+authors: [
+  "Denis Merigoux"
+  "Nicolas Chataing"
+  "Emile Rolley"
+  "Louis Gesbert"
+  "Aymeric Fromherz"
+  "Alain Delaët-Tixeuil"
+]
+license: "Apache-2.0"
+homepage: "https://github.com/CatalaLang/catala"
+bug-reports: "https://github.com/CatalaLang/catala/issues"
+depends: [
+  "ocamlformat" {= "0.21.0"}
+  "obelisk"
+  "conf-npm"
+]