diff --git a/packages/dart/sshnoports/tools/Dockerfile b/packages/dart/sshnoports/tools/Dockerfile
index 04b89ecdc..dce171114 100644
--- a/packages/dart/sshnoports/tools/Dockerfile
+++ b/packages/dart/sshnoports/tools/Dockerfile
@@ -1,7 +1,7 @@
 # Dockerfile
 # Build image for a containerized instance of sshnpd
 
-FROM dart:3.5.4@sha256:3f3877b9a75a1695dd284151d2dab5787bc6cefd04313b6a8e0bee98230d347b AS buildimage
+FROM dart:3.6.0@sha256:b677df29e01bca3a2d5bdaffe204498834d56a4ed38ff56c0ac6a42d6541b58e AS buildimage
 ENV PACKAGEDIR=packages/dart/sshnoports
 ENV BINARYDIR=/usr/local/at
 SHELL ["/bin/bash", "-c"]
diff --git a/packages/dart/sshnoports/tools/Dockerfile.activate b/packages/dart/sshnoports/tools/Dockerfile.activate
index 976592e1b..df0570a3d 100644
--- a/packages/dart/sshnoports/tools/Dockerfile.activate
+++ b/packages/dart/sshnoports/tools/Dockerfile.activate
@@ -1,6 +1,6 @@
 # Dockerfile.activate
 # Build image for a containerized call of the at_activate binary
-FROM dart:3.5.4@sha256:3f3877b9a75a1695dd284151d2dab5787bc6cefd04313b6a8e0bee98230d347b AS buildimage
+FROM dart:3.6.0@sha256:b677df29e01bca3a2d5bdaffe204498834d56a4ed38ff56c0ac6a42d6541b58e AS buildimage
 ENV PACKAGEDIR=packages/dart/sshnoports
 ENV BINARYDIR=/usr/local/at
 SHELL ["/bin/bash", "-c"]
diff --git a/packages/dart/sshnoports/tools/Dockerfile.sshnpd-slim b/packages/dart/sshnoports/tools/Dockerfile.sshnpd-slim
index 5fcc4e5c2..364f5c88e 100644
--- a/packages/dart/sshnoports/tools/Dockerfile.sshnpd-slim
+++ b/packages/dart/sshnoports/tools/Dockerfile.sshnpd-slim
@@ -9,7 +9,7 @@
 # as of 5th Feb 2024 - Will check state as 3.3 Stable is released
 #FROM dart:beta-sdk AS buildimage
 
-FROM dart:3.5.4@sha256:3f3877b9a75a1695dd284151d2dab5787bc6cefd04313b6a8e0bee98230d347b  AS buildimage
+FROM dart:3.6.0@sha256:b677df29e01bca3a2d5bdaffe204498834d56a4ed38ff56c0ac6a42d6541b58e  AS buildimage
 ENV PACKAGEDIR=packages/dart/sshnoports
 ENV OPENSSH=tools/static-openssh
 ENV BINARYDIR=/usr/local/at
diff --git a/tests/end2end_tests/image/Dockerfile b/tests/end2end_tests/image/Dockerfile
index 83e6f76b5..7b8e2149f 100644
--- a/tests/end2end_tests/image/Dockerfile
+++ b/tests/end2end_tests/image/Dockerfile
@@ -26,7 +26,7 @@ RUN set -eux ; \
 
 # BRANCH
 # BUILD BRANCH
-FROM dart:3.5.4@sha256:3f3877b9a75a1695dd284151d2dab5787bc6cefd04313b6a8e0bee98230d347b AS build-branch
+FROM dart:3.6.0@sha256:b677df29e01bca3a2d5bdaffe204498834d56a4ed38ff56c0ac6a42d6541b58e AS build-branch
 
 ENV URL=https://github.com/atsign-foundation/noports.git
 ENV REPO_DIR=/app/repo
@@ -65,7 +65,7 @@ ENTRYPOINT cp -r /mount/. ${HOMEDIR} && sudo service ssh start && sh ${HOMEDIR}/
 
 # LOCAL
 # BUILD LOCAL
-FROM dart:3.5.4@sha256:3f3877b9a75a1695dd284151d2dab5787bc6cefd04313b6a8e0bee98230d347b AS build-local
+FROM dart:3.6.0@sha256:b677df29e01bca3a2d5bdaffe204498834d56a4ed38ff56c0ac6a42d6541b58e AS build-local
 
 ENV REPO_DIR=/app/repo
 ENV PACKAGE_DIR=${REPO_DIR}/packages/dart/sshnoports