diff --git a/angstrom-async.opam b/angstrom-async.opam
index 22460af..8dfa73c 100644
--- a/angstrom-async.opam
+++ b/angstrom-async.opam
@@ -6,7 +6,7 @@ homepage: "https://github.com/inhabitedtype/angstrom"
 bug-reports: "https://github.com/inhabitedtype/angstrom/issues"
 dev-repo: "git+https://github.com/inhabitedtype/angstrom.git"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]
diff --git a/angstrom-lwt-unix.opam b/angstrom-lwt-unix.opam
index b956947..d99d808 100644
--- a/angstrom-lwt-unix.opam
+++ b/angstrom-lwt-unix.opam
@@ -6,7 +6,7 @@ homepage: "https://github.com/inhabitedtype/angstrom"
 bug-reports: "https://github.com/inhabitedtype/angstrom/issues"
 dev-repo: "git+https://github.com/inhabitedtype/angstrom.git"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]
diff --git a/angstrom-unix.opam b/angstrom-unix.opam
index 3ae9b22..bcded29 100644
--- a/angstrom-unix.opam
+++ b/angstrom-unix.opam
@@ -6,7 +6,7 @@ homepage: "https://github.com/inhabitedtype/angstrom"
 bug-reports: "https://github.com/inhabitedtype/angstrom/issues"
 dev-repo: "git+https://github.com/inhabitedtype/angstrom.git"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]
diff --git a/angstrom.opam b/angstrom.opam
index b121227..b531b40 100644
--- a/angstrom.opam
+++ b/angstrom.opam
@@ -6,7 +6,7 @@ homepage: "https://github.com/inhabitedtype/angstrom"
 bug-reports: "https://github.com/inhabitedtype/angstrom/issues"
 dev-repo: "git+https://github.com/inhabitedtype/angstrom.git"
 build: [
-  ["dune" "subst"] {pinned}
+  ["dune" "subst"] {dev}
   ["dune" "build" "-p" name "-j" jobs]
   ["dune" "runtest" "-p" name "-j" jobs] {with-test}
 ]