diff --git a/irmin-mem.opam b/irmin-mem.opam
index 8f097ba806..0d82e0c91e 100644
--- a/irmin-mem.opam
+++ b/irmin-mem.opam
@@ -16,7 +16,7 @@ build: [
 
 depends: [
   "ocaml"      {>= "4.03.0"}
-  "dune"       {build & >= "1.1.0"}
+  "dune"       {>= "1.1.0"}
   "irmin"      {>= "1.3.0"}
   "irmin-test" {with-test}
 ]
diff --git a/irmin-mirage-git.opam b/irmin-mirage-git.opam
index dc830bf0ae..11347a62d3 100644
--- a/irmin-mirage-git.opam
+++ b/irmin-mirage-git.opam
@@ -14,7 +14,7 @@ build: [
 ]
 
 depends: [
-  "dune"       {build & >= "1.1.0"}
+  "dune"       {>= "1.1.0"}
   "irmin-mirage"
   "irmin-git"  {>= "1.3.0"}
   "git-mirage" {>= "2.1.1"}
diff --git a/irmin-mirage-graphql.opam b/irmin-mirage-graphql.opam
index e450180afc..8d992de059 100644
--- a/irmin-mirage-graphql.opam
+++ b/irmin-mirage-graphql.opam
@@ -14,7 +14,7 @@ build: [
 ]
 
 depends: [
-  "dune"    {build & >= "1.1.0"}
+  "dune"    {>= "1.1.0"}
   "irmin-mirage"
   "git-mirage" {>= "2.1.1"}
   "irmin-graphql"
diff --git a/irmin-unix.opam b/irmin-unix.opam
index 62452914c9..edfbca6c30 100644
--- a/irmin-unix.opam
+++ b/irmin-unix.opam
@@ -16,7 +16,7 @@ build: [
 
 depends: [
   "ocaml"         {>= "4.01.0"}
-  "dune"          {build & >= "1.1.0"}
+  "dune"          {>= "1.1.0"}
   "irmin"         {=version}
   "irmin-mem"     {=version}
   "irmin-git"     {=version}
diff --git a/irmin.opam b/irmin.opam
index 6197a43f93..8b585b606c 100644
--- a/irmin.opam
+++ b/irmin.opam
@@ -16,7 +16,7 @@ build: [
 
 depends: [
   "ocaml"   {>= "4.06.0"}
-  "dune"    {build & >= "1.1.0"}
+  "dune"    {>= "1.1.0"}
   "fmt"     {>= "0.8.0"}
   "uri"     {>= "1.3.12"}
   "jsonm"   {>= "1.0.0"}