diff --git a/CHANGES b/CHANGES
index a163d932..db862ae5 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,4 +1,4 @@
-1.1.5 (unreleased)
+1.1.5 (2022-08-28)
 ======
 * Fix segfault when flushing an encoder that
   hasn't been started yet.
diff --git a/dune-project b/dune-project
index ae57f03a..21a59b29 100644
--- a/dune-project
+++ b/dune-project
@@ -1,4 +1,4 @@
-(lang dune 2.8)
+(lang dune 3.2)
 
 (name ffmpeg)
 (version 1.1.5)
diff --git a/ffmpeg-av.opam b/ffmpeg-av.opam
index af0263ef..471ce55d 100644
--- a/ffmpeg-av.opam
+++ b/ffmpeg-av.opam
@@ -11,7 +11,7 @@ depends: [
   "conf-pkg-config" {build}
   "conf-ffmpeg" {build}
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "dune-configurator" {build}
   "ffmpeg-avutil" {= version}
   "ffmpeg-avcodec" {= version}
diff --git a/ffmpeg-avcodec.opam b/ffmpeg-avcodec.opam
index 18307dc4..aa436cdb 100644
--- a/ffmpeg-avcodec.opam
+++ b/ffmpeg-avcodec.opam
@@ -11,7 +11,7 @@ depends: [
   "conf-pkg-config" {build}
   "conf-ffmpeg" {build}
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "dune-configurator" {build}
   "ffmpeg-avutil" {= version}
   "odoc" {with-doc}
diff --git a/ffmpeg-avdevice.opam b/ffmpeg-avdevice.opam
index d83b1305..521d2266 100644
--- a/ffmpeg-avdevice.opam
+++ b/ffmpeg-avdevice.opam
@@ -11,7 +11,7 @@ depends: [
   "conf-pkg-config" {build}
   "conf-ffmpeg" {build}
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "dune-configurator" {build}
   "ffmpeg-av" {= version}
   "odoc" {with-doc}
diff --git a/ffmpeg-avfilter.opam b/ffmpeg-avfilter.opam
index 28e888fd..ba8b9895 100644
--- a/ffmpeg-avfilter.opam
+++ b/ffmpeg-avfilter.opam
@@ -11,7 +11,7 @@ depends: [
   "conf-pkg-config" {build}
   "conf-ffmpeg" {build}
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "dune-configurator" {build}
   "ffmpeg-avutil" {= version}
   "odoc" {with-doc}
diff --git a/ffmpeg-avutil.opam b/ffmpeg-avutil.opam
index 7dc9bbc7..b54983b1 100644
--- a/ffmpeg-avutil.opam
+++ b/ffmpeg-avutil.opam
@@ -11,7 +11,7 @@ depends: [
   "conf-pkg-config" {build}
   "conf-ffmpeg" {build}
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "dune-configurator" {build}
   "base-threads"
   "odoc" {with-doc}
diff --git a/ffmpeg-swresample.opam b/ffmpeg-swresample.opam
index a44c7cd8..f0fe5e13 100644
--- a/ffmpeg-swresample.opam
+++ b/ffmpeg-swresample.opam
@@ -11,7 +11,7 @@ depends: [
   "conf-pkg-config" {build}
   "conf-ffmpeg" {build}
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "dune-configurator" {build}
   "ffmpeg-avutil" {= version}
   "ffmpeg-avcodec" {= version}
diff --git a/ffmpeg-swscale.opam b/ffmpeg-swscale.opam
index 029d8a15..1e92919b 100644
--- a/ffmpeg-swscale.opam
+++ b/ffmpeg-swscale.opam
@@ -11,7 +11,7 @@ depends: [
   "conf-pkg-config" {build}
   "conf-ffmpeg" {build}
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "dune-configurator" {build}
   "ffmpeg-avutil" {= version}
   "odoc" {with-doc}
diff --git a/ffmpeg.opam b/ffmpeg.opam
index d54fb380..f1802cab 100644
--- a/ffmpeg.opam
+++ b/ffmpeg.opam
@@ -9,7 +9,7 @@ homepage: "https://github.com/savonet/ocaml-ffmpeg"
 bug-reports: "https://github.com/savonet/ocaml-ffmpeg/issues"
 depends: [
   "ocaml" {>= "4.08.0"}
-  "dune" {>= "2.8"}
+  "dune" {>= "3.2"}
   "ffmpeg-av" {= version}
   "ffmpeg-avutil" {= version}
   "ffmpeg-avcodec" {= version}