diff --git a/apps/diskover/Dockerfile b/apps/diskover/Dockerfile
index 48f1a348c..59d667aa0 100644
--- a/apps/diskover/Dockerfile
+++ b/apps/diskover/Dockerfile
@@ -22,7 +22,7 @@ RUN \
   echo "**** install runtime packages ****" && \
   apt-get install -y --no-install-recommends \
     ncurses-bin \
-    php8.3-cli \
+    php8.5-cli \
     php-sqlite3 \
     php-fpm \
     python3-pip \
diff --git a/apps/diskover/start.sh b/apps/diskover/start.sh
index 1be664573..33ebe8e7e 100755
--- a/apps/diskover/start.sh
+++ b/apps/diskover/start.sh
@@ -38,4 +38,4 @@ if [ -f "/config/diskover.cfg" ]; then
     done
 fi
 
-exec php8.3 -S 0.0.0.0:80 -t /app/diskover-web/public
+exec php8.5 -S 0.0.0.0:80 -t /app/diskover-web/public
diff --git a/apps/kasm/Dockerfile b/apps/kasm/Dockerfile
index 01f3fba45..be98766c8 100644
--- a/apps/kasm/Dockerfile
+++ b/apps/kasm/Dockerfile
@@ -16,8 +16,8 @@ ENV NVIDIA_DRIVER_CAPABILITIES="compute,graphics,video,utility"
 # Container setup
 RUN \
   echo "**** install packages ****" && \
-  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add - && \
-  echo "deb [arch=$TARGETARCH] https://download.docker.com/linux/ubuntu noble stable" > \
+  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg && \
+  echo "deb [arch=$TARGETARCH signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu noble stable" > \
     /etc/apt/sources.list.d/docker.list && \
   curl -fsSL https://nvidia.github.io/libnvidia-container/gpgkey | gpg --dearmor -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg \
     && curl -s -L https://nvidia.github.io/libnvidia-container/stable/deb/nvidia-container-toolkit.list | \
@@ -27,6 +27,7 @@ RUN \
   echo "Package: docker-ce docker-ce-cli docker-ce-rootless-extras \
   Pin: version 5:28.* \
   Pin-Priority: 1001" > /etc/apt/preferences.d/docker && \
+  apt-get update && \
   apt-get install -y --no-install-recommends \
     btrfs-progs \
     build-essential \