diff --git a/Makefile b/Makefile
index b88a12f832d..9a3a169ce20 100644
--- a/Makefile
+++ b/Makefile
@@ -38,9 +38,9 @@ endif
 
 src_ext/dune-local/dune.exe: src_ext/dune-local.stamp $(DUNE_SECONDARY)
 ifeq ($(DUNE_SECONDARY),)
-	cd src_ext/dune-local && ocaml bootstrap.ml
+	cd src_ext/dune-local && ocaml boot/bootstrap.ml
 else
-	cd src_ext/dune-local && ( unset OCAMLLIB ; unset CAML_LD_LIBRARY_PATH ; PATH="$(dir $(realpath $(DUNE_SECONDARY))):$$PATH" ../../$(DUNE_SECONDARY) bootstrap.ml )
+	cd src_ext/dune-local && ( unset OCAMLLIB ; unset CAML_LD_LIBRARY_PATH ; PATH="$(dir $(realpath $(DUNE_SECONDARY))):$$PATH" ../../$(DUNE_SECONDARY) boot/bootstrap.ml )
 endif
 
 src_ext/dune-local.stamp:
diff --git a/master_changes.md b/master_changes.md
index 25081faac79..f26168075f1 100644
--- a/master_changes.md
+++ b/master_changes.md
@@ -66,6 +66,10 @@ New option/command/subcommand are prefixed with ◈.
   * Upgrade to dose3 >= 6.1 and vendor dose3 7.0.0 [#4760 @kit-ty-kate]
   * Change minimum required OCaml to 4.03.0 [#4770 @dra27]
   * Change minimum required Dune to 2.0 [#4770 @dra27]
+  * Do not check for cppo in the configure script (not used directly anymore since #5498) [#5794 @kit-ty-kate]
+  * Upgrade vendored cmdliner to 1.2.0 [#5797 @kit-ty-kate]
+  * Add winsymlinks:native to the CYGWIN environment variable when installing a package on Windows [#5793 @kit-ty-kate - fix #5782]
+  * Upgrade the vendored dune to 3.14.0 [#5869 @kit-ty-kate]
 
 ## Infrastructure
   *
diff --git a/src_ext/Makefile b/src_ext/Makefile
index 780403247a8..8e2558d6857 100644
--- a/src_ext/Makefile
+++ b/src_ext/Makefile
@@ -108,7 +108,7 @@ DUNE_CLONE=
 endif
 
 dune-local/_boot/install/default/bin/dune$(EXE): $(DUNE_CLONE)
-	cd dune-local && ocaml bootstrap.ml && ./boot.exe --release
+	cd dune-local && ocaml boot/bootstrap.ml && ./boot.exe --release
 
 build-pkg: clone-pkg $(PKG_EXTS:=.pkgbuild)
 	@
diff --git a/src_ext/Makefile.packages b/src_ext/Makefile.packages
index 599dbbc8068..1306b17545f 100644
--- a/src_ext/Makefile.packages
+++ b/src_ext/Makefile.packages
@@ -107,7 +107,7 @@ dose3-pkg-build:
 	dune install "--prefix=$(OCAMLROOT)" -p dose3 dose3
 
 dune-local-pkg-build:
-	ocaml bootstrap.ml
+	ocaml boot/bootstrap.ml
 	cp dune.exe $(OCAMLBIN)/dune$(EXT_EXE)
 
 mccs-pkg-build:
diff --git a/src_ext/Makefile.sources b/src_ext/Makefile.sources
index 4213ec67567..4def6681f04 100644
--- a/src_ext/Makefile.sources
+++ b/src_ext/Makefile.sources
@@ -64,9 +64,8 @@ MD5_result = 1b82dec78849680b49ae9a8a365b831b
 $(call PKG_SAME,result)
 
 # NB If minimum OCaml version for Dune changes, update DUNE_SECONDARY in configure.ac
-URL_dune-local = https://github.com/ocaml/dune/releases/download/3.5.0/dune-3.5.0.tbz
-MD5_dune-local = 46d1bde258ef60f60f053e88fe9d937b
-
+URL_dune-local = https://github.com/ocaml/dune/releases/download/3.14.0/dune-3.14.0.tbz
+MD5_dune-local = bff778fff4996b890e5af3da7ecf5baa
 $(call PKG_SAME,dune-local)
 
 URL_PKG_findlib = http://download.camlcity.org/download/findlib-1.9.1.tar.gz