diff --git a/dune-project b/dune-project
new file mode 100644
index 0000000..7655de0
--- /dev/null
+++ b/dune-project
@@ -0,0 +1 @@
+(lang dune 1.1)
diff --git a/lib/dune b/lib/dune
new file mode 100644
index 0000000..a3e147e
--- /dev/null
+++ b/lib/dune
@@ -0,0 +1,7 @@
+(library
+ (name        websocketaf)
+  (public_name websocketaf)
+  (libraries
+    base64 angstrom faraday httpaf result)
+  (flags (:standard -safe-string)))
+
diff --git a/lib/jbuild b/lib/jbuild
deleted file mode 100644
index f830add..0000000
--- a/lib/jbuild
+++ /dev/null
@@ -1,9 +0,0 @@
-(jbuild_version 1)
-
-(library
- ((name        websocketaf)
-  (public_name websocketaf)
-  (libraries
-    (base64 angstrom faraday httpaf result))
-  (flags (:standard -safe-string))))
-
diff --git a/websocketaf.opam b/websocketaf.opam
index 1f115db..85276a1 100644
--- a/websocketaf.opam
+++ b/websocketaf.opam
@@ -6,14 +6,14 @@ homepage: "https://github.com/inhabitedtype/websocketaf"
 bug-reports: "https://github.com/inhabitedtype/websocketaf/issues"
 dev-repo: "https://github.com/inhabitedtype/websocketaf.git"
 build: [
-  ["jbuilder" "subst"] {pinned}
-  ["jbuilder" "build" "-p" name "-j" jobs]
+  ["dune" "subst"] {pinned}
+  ["dune" "build" "-p" name "-j" jobs]
 ]
 build-test: [
-  ["jbuilder" "runtest" "-p" name]
+  ["dune" "runtest" "-p" name]
 ]
 depends: [
-  "jbuilder" {build & >= "1.0+beta10"}
+  "dune" {build}
   "base64"
   "alcotest" {test}
   "angstrom" {>= "0.7.0"}