diff --git a/.drone.yml b/.drone.yml
index 0caa186..53a1b7d 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,6 +1,32 @@
 kind: pipeline
 type: docker
-name: release
+name: release-amd64
+
+platform:
+  os: linux
+  arch: amd64
+
+trigger:
+  ref:
+    - refs/heads/trunk
+    - refs/heads/stable
+    - refs/tags/**
+
+steps:
+  - name: build
+    image: 324181518966.dkr.ecr.us-west-2.amazonaws.com/debian-builder:86
+    
+    commands:
+      - make upload-release
+
+---
+kind: pipeline
+type: docker
+name: release-arm64
+
+platform:
+  os: linux
+  arch: arm64
 
 trigger:
   ref:
@@ -10,7 +36,7 @@ trigger:
 
 steps:
   - name: build
-    image: 324181518966.dkr.ecr.us-west-2.amazonaws.com/debian-builder:49
+    image: 324181518966.dkr.ecr.us-west-2.amazonaws.com/debian-builder:86
     
     commands:
       - make upload-release
@@ -28,7 +54,7 @@ trigger:
 
 steps:
   - name: build
-    image: 324181518966.dkr.ecr.us-west-2.amazonaws.com/debian-builder:49
+    image: 324181518966.dkr.ecr.us-west-2.amazonaws.com/debian-builder:86
     
     commands:
       - make upload-trunk
diff --git a/Makefile b/Makefile
index 945b726..2598989 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,24 @@
-UNISON_NEXT_RELEASE=0.5.28
-UNISON_CURRENT_RELEASE=0.5.27
-UNISON_TRUNK=https://github.com/unisonweb/unison/releases/download/trunk-build/ucm-linux-x64.tar.gz
-UNISON_RELEASE:=https://github.com/unisonweb/unison/releases/download/release%2F$(UNISON_CURRENT_RELEASE)/ucm-linux.tar.gz
+UNISON_NEXT_RELEASE=1.3.1
+UNISON_CURRENT_RELEASE=1.3.0
+ARCH := $(shell dpkg --print-architecture)
+
+ifeq "$(ARCH)" "arm64"
+  UNISON_TRUNK=https://github.com/unisonweb/unison/releases/download/trunk-build/ucm-linux-arm64.tar.gz
+  UNISON_RELEASE:=https://github.com/unisonweb/unison/releases/download/release%2F$(UNISON_CURRENT_RELEASE)/ucm-linux-arm64.tar.gz
+else
+  UNISON_TRUNK=https://github.com/unisonweb/unison/releases/download/trunk-build/ucm-linux-x64.tar.gz
+  UNISON_RELEASE:=https://github.com/unisonweb/unison/releases/download/release%2F$(UNISON_CURRENT_RELEASE)/ucm-linux-x64.tar.gz
+endif
+
 TRUNK_VERSION := $(UNISON_NEXT_RELEASE)~trunk+$(shell date '+%Y%m%d')
+TRUNK_VERSION_URL := $(UNISON_NEXT_RELEASE)~trunk%2B$(shell date '+%Y%m%d')
 
 APTLY_URI := $(shell dig +short -t SRV aptly.service.us-west-2.consul.unison-lang.org | awk '{print "http://" $$4 ":" $$3}')
 
 SPACKAGE := $(shell dpkg-parsechangelog -S source)
 DIST := bookworm
-ARCH := $(shell dpkg --print-architecture)
+
+
 
 TRUNK_DEB := ../$(SPACKAGE)_$(TRUNK_VERSION)_$(ARCH).deb
 RELEASE_DEB := ../$(SPACKAGE)_$(UNISON_CURRENT_RELEASE)_$(ARCH).deb
@@ -33,15 +43,13 @@ $(RELEASE_DEB):
 	dpkg-buildpackage -rfakeroot -uc -us
 
 upload-trunk: $(TRUNK_DEB)
-	curl -X POST -F file=@$(TRUNK_DEB) $(APTLY_URI)/api/files/$(SPACKAGE)
-	curl -X POST $(APTLY_URI)/api/repos/nightly/file/$(SPACKAGE)
-	curl -X DELETE $(APTLY_URI)/api/publish//bookworm
-	curl -X POST -H 'Content-Type: application/json' -d '{"SourceKind":"local", "Sources":[{"Name": "nightly"}, {"Name": "release"}], "Origin":"Unison Computing"}' $(APTLY_URI)/api/publish
+	curl -v -X POST -F "file=@$(TRUNK_DEB)" $(APTLY_URI)/api/files/$(SPACKAGE)
+	curl -X POST $(APTLY_URI)/api/repos/trixie-nightly/file/$(SPACKAGE)/$(SPACKAGE)_$(TRUNK_VERSION_URL)_$(ARCH).deb
+	curl -X PUT -H 'Content-Type: application/json' -d '{"ForceOverwrite": true}' $(APTLY_URI)/api/publish//trixie
 
 upload-release: $(RELEASE_DEB)
 	curl -X POST -F file=@$(RELEASE_DEB) $(APTLY_URI)/api/files/$(SPACKAGE)
-	curl -X POST $(APTLY_URI)/api/repos/release/file/$(SPACKAGE)
-	curl -X DELETE $(APTLY_URI)/api/publish//bookworm
-	curl -X POST -H 'Content-Type: application/json' -d '{"SourceKind":"local", "Sources":[{"Name": "nightly"}, {"Name": "release"}], "Origin":"Unison Computing"}' $(APTLY_URI)/api/publish
+	curl -X POST $(APTLY_URI)/api/repos/trixie-release/file/$(SPACKAGE)/$(SPACKAGE)_$(UNISON_CURRENT_RELEASE)_$(ARCH).deb
+	curl -X PUT -H 'Content-Type: application/json' -d '{"ForceOverwrite": true}' $(APTLY_URI)/api/publish//trixie
 
 .PHONY: build upload-trunk v
diff --git a/README.md b/README.md
index 28cf56a..797df3f 100644
--- a/README.md
+++ b/README.md
@@ -1,34 +1,6 @@
 This project packages the (Unison Code Manager)[https://unison-lang.org/] for the Debian and Debian-based distributions, such as Ubuntu.
 
-## Releaseing a new version
+## When a new UCM version is released
 
+edit Makefile and increment the version numbers at the two two lines of a file. The "UNISON_NEXT_RELEASE" variable should always just be a minor version bump from the "UNISON_CURRENT_RELEASE" variable. The "UNISON_NEXT_RELEASE" variable is used to caculate the versions of the nightly builds. If the "UNISON_NEXT_RELEASE=1.2.3" then the nightly versions will be in the form "1.2.3~20240101". In debian the "~" character is used to indicate prelrelease versions. So when we eventually release a 1.2.3 version, it will be considered newer than any version that is 1.2.3~anything.
 
-1. Update the version in the `debian/changelog` file. The easiest way to do this is to use the `dch` command from the `devscripts` package. For example:
-
-```
-EMAIL=stew@unison.cloud dch -v 0.51.0-1 "New upstream release"
-```
-
-which will create a new entry in debian/changelog that starts with something like this:
-
-```
-unisonweb (0.5.20~trunk+2024041702) unstable; urgency=low
-```
-
-This version string previx should be the same as the unison release number. A trunk or unreleased version should use the next version as the version number and a tilde, as above to add some version information to differentiate it from other prerelease versions.
-
-Details about how debian sorts version numbers can be found in (The Debian Policy Manual)[https://www.debian.org/doc/debian-policy/ch-controlfields.html#s-f-version].
-
-You can use dpkg to verify that two versions compare they way you expect with some command like:
-
-```
-dpkg --compare-versions 0.5.20~trunk+2024041702 lt 0.5.20 && echo "true" || echo "false"
-```
-
-or 
-
-```
-dpkg --compare-versions 0.5.20~trunk+2024041702 '<' 0.5.20 && echo "true" || echo "false"
-````
-
-2. Commit the changes to either the unstable or stable branch and push to github.
diff --git a/debian/changelog b/debian/changelog
index 7d79b71..fc55b62 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+unisonweb (0.5.50~trunk+20250925) bookworm; urgency=medium
+
+  * Nightly build
+
+ -- Stew O'Connor <stew@unison.cloud>  Thu, 25 Sep 2025 10:34:48 -0700
+
 unisonweb (0.5.27) bookworm; urgency=medium
 
   * Release build
diff --git a/debian/control b/debian/control
index cfb25cd..0f3789a 100644
--- a/debian/control
+++ b/debian/control
@@ -12,5 +12,5 @@ Package: unisonweb
 Architecture: any
 Section: devel
 Multi-Arch: foreign
-Depends: ${misc:Depends}, ${shlibs:Depends}, libncurses6, libtinfo6, less, locales, racket, racket-doc
+Depends: ${misc:Depends}, ${shlibs:Depends}, libncurses6, libtinfo6, less, locales
 Description: A functional programming language
diff --git a/debian/rules b/debian/rules
index 533eb1c..dc9e269 100755
--- a/debian/rules
+++ b/debian/rules
@@ -15,6 +15,3 @@ override_dh_install:
 
 override_dh_strip:
 	echo
-
-override_dh_shlibdeps:
-	dh_shlibdeps -Xunison-runtime
diff --git a/debian/unisonweb.install b/debian/unisonweb.install
index 30a4790..4ff4751 100644
--- a/debian/unisonweb.install
+++ b/debian/unisonweb.install
@@ -1,5 +1,4 @@
 ucm usr/bin/
 build/unison/unison usr/lib/unisonweb/
-build/racket/unison.zip usr/lib/unisonweb/racket/
 build/ui usr/share/unisonweb/
-build/runtime/bin/unison-runtime usr/lib/unisonweb/
+
diff --git a/debian/unisonweb.postinst b/debian/unisonweb.postinst
deleted file mode 100644
index 5262da5..0000000
--- a/debian/unisonweb.postinst
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/bin/sh
-
-set -eu
-
-if [ "$1" = 'configure' ]; then
-    if raco pkg show -u | grep -q unison ; then
-        raco pkg update --auto /usr/lib/unisonweb/racket/unison.zip
-    else
-        raco pkg install --no-docs --auto /usr/lib/unisonweb/racket/unison.zip
-    fi
-fi
diff --git a/debian/unisonweb.prerm b/debian/unisonweb.prerm
deleted file mode 100644
index 6d56a18..0000000
--- a/debian/unisonweb.prerm
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/sh
-
-case "$1" in
-  remove|deconfigure)
-    raco pkg remove unison
-esac
\ No newline at end of file
diff --git a/debian/unisonweb.substvars b/debian/unisonweb.substvars
index 980e504..97ad94f 100644
--- a/debian/unisonweb.substvars
+++ b/debian/unisonweb.substvars
@@ -1,3 +1,3 @@
-shlibs:Depends=libc6 (>= 2.34), libgmp10 (>= 2:6.2.1+dfsg1), zlib1g (>= 1:1.1.4)
+shlibs:Depends=libc6 (>= 2.34), libgmp10 (>= 2:6.3.0+dfsg), zlib1g (>= 1:1.1.4)
 misc:Depends=
 misc:Pre-Depends=
diff --git a/ucm b/ucm
index 44a29bc..c8cacd9 100755
--- a/ucm
+++ b/ucm
@@ -1,3 +1,3 @@
 #!/bin/sh
 
-UCM_WEB_UI=/usr/share/unisonweb/ui /usr/lib/unisonweb/unison --runtime-path /usr/lib/unisonweb/unison-runtime "$@"
\ No newline at end of file
+UCM_WEB_UI=/usr/share/unisonweb/ui /usr/lib/unisonweb/unison "$@"