diff --git a/bastion/src/modules/modules/k3s/src/install.ts b/bastion/src/modules/modules/k3s/src/install.ts
index e9202cd..b899668 100644
--- a/bastion/src/modules/modules/k3s/src/install.ts
+++ b/bastion/src/modules/modules/k3s/src/install.ts
@@ -215,7 +215,9 @@ echo "  Using network device: \$DEFAULT_DEV"
 
 KUBECONFIG=/etc/rancher/k3s/k3s.yaml cilium install \\
   --set kubeProxyReplacement=true \\
-  --set ipam.mode=kubernetes \\
+  --set ipam.mode=cluster-pool \\
+  --set ipam.operator.clusterPoolIPv4PodCIDRList='{10.42.0.0/16}' \\
+  --set ipam.operator.clusterPoolIPv4MaskSize=24 \\
   --set devices="\$DEFAULT_DEV" \\
   --set nodePort.directRoutingDevice="\$DEFAULT_DEV"
 
diff --git a/bastion/src/modules/modules/k3s/src/operations/cilium.ts b/bastion/src/modules/modules/k3s/src/operations/cilium.ts
index 7ac05ff..054f8d2 100644
--- a/bastion/src/modules/modules/k3s/src/operations/cilium.ts
+++ b/bastion/src/modules/modules/k3s/src/operations/cilium.ts
@@ -47,7 +47,9 @@ export const installCilium: Operation = async (ctx): Promise<OperationResult> =>
   const installResult = await ctx.ssh.exec(
     `KUBECONFIG=/etc/rancher/k3s/k3s.yaml cilium install \
       --set kubeProxyReplacement=true \
-      --set ipam.mode=kubernetes \
+      --set ipam.mode=cluster-pool \
+      --set ipam.operator.clusterPoolIPv4PodCIDRList='{10.42.0.0/16}' \
+      --set ipam.operator.clusterPoolIPv4MaskSize=24 \
       --set k8sServiceHost=127.0.0.1 \
       --set k8sServicePort=6444 \
       --set cni.exclusive=false \
diff --git a/bastion/tests/integration/k3s-single-node.test.ts b/bastion/tests/integration/k3s-single-node.test.ts
index d52c328..f139965 100644
--- a/bastion/tests/integration/k3s-single-node.test.ts
+++ b/bastion/tests/integration/k3s-single-node.test.ts
@@ -161,7 +161,7 @@ EOF'
       CILIUM_CLI_VERSION=$(curl -s https://raw.githubusercontent.com/cilium/cilium-cli/main/stable.txt)
       curl -L --fail --silent "https://github.com/cilium/cilium-cli/releases/download/\${CILIUM_CLI_VERSION}/cilium-linux-amd64.tar.gz" | sudo tar xz -C /usr/local/bin
       DEFAULT_DEV=$(ip -4 route show default | awk '{print $5}' | head -1)
-      sudo KUBECONFIG=/etc/rancher/k3s/k3s.yaml cilium install --set kubeProxyReplacement=true --set ipam.mode=kubernetes --set devices=$DEFAULT_DEV --set nodePort.directRoutingDevice=$DEFAULT_DEV
+      sudo KUBECONFIG=/etc/rancher/k3s/k3s.yaml cilium install --set kubeProxyReplacement=true --set ipam.mode=cluster-pool --set ipam.operator.clusterPoolIPv4PodCIDRList='{10.42.0.0/16}' --set ipam.operator.clusterPoolIPv4MaskSize=24 --set devices=$DEFAULT_DEV --set nodePort.directRoutingDevice=$DEFAULT_DEV
     `.trim(), "cilium install", { keyPath: sshKeyPath, timeout: 120_000 });
 
     log("Waiting for Cilium to be ready...");