diff --git a/README.md b/README.md
index c817a49..861fe53 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ This is a Docker image of a vanilla iRODS >=4.2.11 server that works
 out of the box. To be used for running tests only.
 
 The server version may be chosen by passing the Docker build argument
-`--build-arg IRODS_VERSION=<version>` (default is 4.3.0).
+`--build-arg IRODS_VERSION=<version>` (default is 4.3.1).
 
 ### irods/ubuntu/22.04 ###
 
@@ -81,23 +81,6 @@ e.g. Install wrappers to $PREFIX/bin:
     ...
     -rwxr-xr-x 1 kdj staff 409 Apr 12 15:47 samtools
 
-# iRODS Client Bundle
-
-The release contains irods 4.2.7 clients bundled from
-`ub-16.04-irods-clients-4.2.7` to be used on ONT machines, where we
-cannot run containers.  Given the complexity of the iRODS clients'
-dependency chain, the location of the plugins must be provided in the
-iRODS environment file using the `irods_plugins_home` key. Some
-dependencies for these plugins must also be preloaded to avoid local
-system libraries from being pulled in, e.g.:
-
-    $ LD_PRELOAD=path/libarchive.so.16:path/libcrypto.so.1.0.0:path/libssl.so.1.0.0:path/libxml2.so.2:path/libicuuc.so.55:path/libicudata.so.55 \
-        ./exodus/bin/iinit
-
-A script to do this is set up by the ansible used to set up the instruments
-(https://gitlab.internal.sanger.ac.uk/npg/oxford_nanopore_instruments).
-
-
 ## Author
 
 Keith James kdj@sanger.ac.uk
diff --git a/docker/Makefile b/docker/Makefile
index 53fd316..c6e707d 100644
--- a/docker/Makefile
+++ b/docker/Makefile
@@ -173,7 +173,7 @@ ub-22.04-irods-4.3.3.$(TAG): irods/ubuntu/22.04/Dockerfile ub-22.04-base.$(TAG)
 	docker buildx build $(DOCKER_ARGS) \
 	--load \
 	--build-arg BASE_IMAGE=$(DOCKER_PREFIX)/ub-22.04-base \
-	--build-arg IRODS_VERSION=4.3.2 \
+	--build-arg IRODS_VERSION=4.3.3 \
 	--label org.opencontainers.image.title="iRODS 4.3.3 server, Ubuntu 22.04" \
 	--label org.opencontainers.image.source=$(git_url) \
 	--label org.opencontainers.image.revision=$(git_commit) \
@@ -206,7 +206,7 @@ ub-16.04-irods-clients-4.2.7.$(TAG): irods_clients/ubuntu/16.04/Dockerfile ub-16
 	--build-arg DOCKER_IMAGE=$(subst .$(TAG),,$@) \
 	--build-arg DOCKER_TAG=$(TAG) \
 	--build-arg IRODS_VERSION=4.2.7 \
-	--build-arg BATON_VERSION=4.2.2 \
+	--build-arg BATON_VERSION=4.3.1 \
 	--build-arg HTSLIB_VERSION=1.20 \
 	--build-arg SAMTOOLS_VERSION=1.20 \
 	--build-arg BCFTOOLS_VERSION=1.20 \
@@ -228,7 +228,7 @@ ub-18.04-irods-clients-4.2.11.$(TAG): irods_clients/ubuntu/18.04/Dockerfile ub-1
 	--build-arg DOCKER_IMAGE=$(subst .$(TAG),,$@) \
 	--build-arg DOCKER_TAG=$(TAG) \
 	--build-arg IRODS_VERSION=4.2.11 \
-	--build-arg BATON_VERSION=4.2.2 \
+	--build-arg BATON_VERSION=4.3.1 \
 	--build-arg HTSLIB_VERSION=1.20 \
 	--build-arg SAMTOOLS_VERSION=1.20 \
 	--build-arg BCFTOOLS_VERSION=1.20 \
@@ -251,7 +251,7 @@ ub-18.04-irods-clients-4.2.12.$(TAG): irods_clients/ubuntu/18.04/Dockerfile ub-1
 	--build-arg DOCKER_IMAGE=$(subst .$(TAG),,$@) \
 	--build-arg DOCKER_TAG=$(TAG) \
 	--build-arg IRODS_VERSION=4.2.12 \
-	--build-arg BATON_VERSION=4.2.1 \
+	--build-arg BATON_VERSION=4.3.1 \
 	--build-arg HTSLIB_VERSION=1.20 \
 	--build-arg SAMTOOLS_VERSION=1.20 \
 	--build-arg BCFTOOLS_VERSION=1.20 \
@@ -274,7 +274,7 @@ ub-22.04-irods-clients-4.3.1.$(TAG): irods_clients/ubuntu/22.04/Dockerfile
 	--build-arg DOCKER_IMAGE=$(subst .$(TAG),,$@) \
 	--build-arg DOCKER_TAG=$(TAG) \
 	--build-arg IRODS_VERSION=4.3.1 \
-	--build-arg BATON_VERSION=4.2.2 \
+	--build-arg BATON_VERSION=4.3.1 \
 	--build-arg HTSLIB_VERSION=1.20 \
 	--build-arg SAMTOOLS_VERSION=1.20 \
 	--build-arg BCFTOOLS_VERSION=1.20 \
@@ -297,7 +297,7 @@ ub-22.04-irods-clients-4.3.2.$(TAG): irods_clients/ubuntu/22.04/Dockerfile
 	--build-arg DOCKER_IMAGE=$(subst .$(TAG),,$@) \
 	--build-arg DOCKER_TAG=$(TAG) \
 	--build-arg IRODS_VERSION=4.3.2 \
-	--build-arg BATON_VERSION=4.2.2 \
+	--build-arg BATON_VERSION=4.3.1 \
 	--build-arg HTSLIB_VERSION=1.20 \
 	--build-arg SAMTOOLS_VERSION=1.20 \
 	--build-arg BCFTOOLS_VERSION=1.20 \
@@ -320,7 +320,7 @@ ub-22.04-irods-clients-4.3.3.$(TAG): irods_clients/ubuntu/22.04/Dockerfile
 	--build-arg DOCKER_IMAGE=$(subst .$(TAG),,$@) \
 	--build-arg DOCKER_TAG=$(TAG) \
 	--build-arg IRODS_VERSION=4.3.3 \
-	--build-arg BATON_VERSION=4.2.2 \
+	--build-arg BATON_VERSION=4.3.1 \
 	--build-arg HTSLIB_VERSION=1.20 \
 	--build-arg SAMTOOLS_VERSION=1.20 \
 	--build-arg BCFTOOLS_VERSION=1.20 \
@@ -342,7 +342,7 @@ ub-22.04-irods-clients-4.3-nightly.$(TAG): irods_clients/ubuntu/22.04/Dockerfile
 	--build-arg DOCKER_IMAGE=$(subst .$(TAG),,$@) \
 	--build-arg DOCKER_TAG=$(TAG) \
 	--build-arg IRODS_VERSION=4.3-nightly \
-	--build-arg BATON_VERSION=4.2.2 \
+	--build-arg BATON_VERSION=4.3.1 \
 	--build-arg HTSLIB_VERSION=1.20 \
 	--build-arg SAMTOOLS_VERSION=1.20 \
 	--build-arg BCFTOOLS_VERSION=1.20 \
diff --git a/docker/irods_clients/ubuntu/16.04/Dockerfile b/docker/irods_clients/ubuntu/16.04/Dockerfile
index 4687605..48862c7 100644
--- a/docker/irods_clients/ubuntu/16.04/Dockerfile
+++ b/docker/irods_clients/ubuntu/16.04/Dockerfile
@@ -6,7 +6,7 @@
 ARG IRODS_VERSION="4.2.7"
 
 # The latest usable versions
-ARG BATON_VERSION="4.2.1"
+ARG BATON_VERSION="4.3.1"
 ARG HTSLIB_VERSION="1.18"
 ARG SAMTOOLS_VERSION="1.18"
 ARG BCFTOOLS_VERSION="1.18"
diff --git a/docker/irods_clients/ubuntu/18.04/Dockerfile b/docker/irods_clients/ubuntu/18.04/Dockerfile
index 504c49e..8e86864 100644
--- a/docker/irods_clients/ubuntu/18.04/Dockerfile
+++ b/docker/irods_clients/ubuntu/18.04/Dockerfile
@@ -8,7 +8,7 @@ ARG IRODS_VERSION="4.3.1"
 ARG IRODS_REVISION="1"
 
 # The latest usable versions
-ARG BATON_VERSION="4.2.1"
+ARG BATON_VERSION="4.3.1"
 ARG HTSLIB_VERSION="1.18"
 ARG SAMTOOLS_VERSION="1.18"
 ARG BCFTOOLS_VERSION="1.18"