diff --git a/builder-web.opam b/builder-web.opam
index ddae823..a89c5fb 100644
--- a/builder-web.opam
+++ b/builder-web.opam
@@ -50,10 +50,10 @@ depends: [
   "decompress" {>= "1.5.0"}
   "digestif" {>= "1.2.0"}
   "uuidm" {>= "0.9.9"}
+  "yojson"
   "alcotest" {>= "1.2.0" & with-test}
   "ppx_deriving" {with-test}
   "ppx_deriving_yojson" {with-test}
-  "yojson" {with-test}
 ]
 
 synopsis: "Web interface for builder"
diff --git a/opamdiff/dune b/opamdiff/dune
index 941f235..fc5561d 100644
--- a/opamdiff/dune
+++ b/opamdiff/dune
@@ -1,3 +1,3 @@
 (library
  (name opamdiff)
- (libraries opam-core opam-format))
+ (libraries opam-core opam-format yojson))