diff --git a/dune-project b/dune-project
index 06ae077..b9f44a1 100644
--- a/dune-project
+++ b/dune-project
@@ -37,6 +37,9 @@
   gluten-eio
   h2-eio
   httpun-ws
+  pecu
+  prettym
+  unstrctrd
   (eio_main
    (>= "1.0"))
   (dune-site :with-test)
diff --git a/nix/default.nix b/nix/default.nix
index 46d0e87..9547d38 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -35,6 +35,10 @@ rec {
       h2-eio
       httpun-ws
 
+      pecu
+      unstrctrd
+      prettym
+
       dune-site
 
       # Not in checkInputs because we also run tests in the musl64 build
diff --git a/piaf.opam b/piaf.opam
index 1ccdbbe..16e30ab 100644
--- a/piaf.opam
+++ b/piaf.opam
@@ -21,6 +21,9 @@ depends: [
   "gluten-eio"
   "h2-eio"
   "httpun-ws"
+  "pecu"
+  "prettym"
+  "unstrctrd"
   "eio_main" {>= "1.0"}
   "dune-site" {with-test}
   "alcotest" {with-test}