diff --git a/dune-project b/dune-project
index 071bace39..2f0ff1e4a 100644
--- a/dune-project
+++ b/dune-project
@@ -33,9 +33,9 @@ the changes in each replica to the other.
 ")
  (depends
   (ocaml
-   (and :build (>= 4.08)))
+   (>= 4.08))
   (dune
-   (and :build (>= 2.3)))))
+   (>= 2.3))))
 
 (package
  (name unison-gui)
@@ -51,11 +51,11 @@ the changes in each replica to the other.
 ")
  (depends
   (ocaml
-   (and :build (>= 4.08)))
+   (>= 4.08))
   (dune
-   (and :build (>= 2.3)))
+   (>= 2.3))
   (lablgtk3
-   (and :build (>= 3.1.0)))))
+   (>= 3.1.0))))
 
 (package
  (name unison-fsmonitor)
@@ -72,6 +72,6 @@ the changes in each replica to the other.
 ")
  (depends
   (ocaml
-   (and :build (>= 4.08)))
+   (>= 4.08))
   (dune
-   (and :build (>= 2.3)))))
+   (>= 2.3))))
diff --git a/unison-fsmonitor.opam b/unison-fsmonitor.opam
index d1ec28e9d..ff6eb8ca6 100644
--- a/unison-fsmonitor.opam
+++ b/unison-fsmonitor.opam
@@ -19,8 +19,8 @@ homepage: "https://www.cis.upenn.edu/~bcpierce/unison/"
 doc: "https://github.com/bcpierce00/unison/wiki"
 bug-reports: "https://github.com/bcpierce00/unison/issues"
 depends: [
-  "ocaml" {build & >= "4.08"}
-  "dune" {build & >= "2.3"}
+  "ocaml" {>= "4.08"}
+  "dune" {>= "2.3"}
 ]
 build: [
   ["dune" "subst"] {pinned}
diff --git a/unison-gui.opam b/unison-gui.opam
index d01b3c978..5c584af52 100644
--- a/unison-gui.opam
+++ b/unison-gui.opam
@@ -18,9 +18,9 @@ homepage: "https://www.cis.upenn.edu/~bcpierce/unison/"
 doc: "https://github.com/bcpierce00/unison/wiki"
 bug-reports: "https://github.com/bcpierce00/unison/issues"
 depends: [
-  "ocaml" {build & >= "4.08"}
-  "dune" {build & >= "2.3"}
-  "lablgtk3" {build & >= "3.1.0"}
+  "ocaml" {>= "4.08"}
+  "dune" {>= "2.3"}
+  "lablgtk3" {>= "3.1.0"}
 ]
 build: [
   ["dune" "subst"] {pinned}
diff --git a/unison.opam b/unison.opam
index dd32efa30..32f2001b3 100644
--- a/unison.opam
+++ b/unison.opam
@@ -18,8 +18,8 @@ homepage: "https://www.cis.upenn.edu/~bcpierce/unison/"
 doc: "https://github.com/bcpierce00/unison/wiki"
 bug-reports: "https://github.com/bcpierce00/unison/issues"
 depends: [
-  "ocaml" {build & >= "4.08"}
-  "dune" {build & >= "2.3"}
+  "ocaml" {>= "4.08"}
+  "dune" {>= "2.3"}
 ]
 build: [
   ["dune" "subst"] {pinned}