diff --git a/lib/container-test-driver/distros.nix b/lib/container-test-driver/distros.nix
index b68595c2..56ac7316 100644
--- a/lib/container-test-driver/distros.nix
+++ b/lib/container-test-driver/distros.nix
@@ -56,6 +56,18 @@ in
     maskableService = "unattended-upgrades.service";
   };
 
+  ubuntu-26_04 = {
+    systems = builtins.attrNames images.ubuntu-26_04;
+    rootfs = makeRootfs.buildRootfs {
+      name = "ubuntu-26_04";
+      cloudImg = fetchCloudImg "ubuntu-26_04";
+      cloudImgFormat = "tar";
+      excludePatterns = ubuntuExcludePatterns;
+      extraDirs = [ "var/lib/apt/lists/partial" ];
+    };
+    maskableService = "unattended-upgrades.service";
+  };
+
   debian-13 = {
     systems = builtins.attrNames images.debian-13;
     rootfs = makeRootfs.buildRootfs {
diff --git a/lib/container-test-driver/images.json b/lib/container-test-driver/images.json
index b98b7837..292854a7 100644
--- a/lib/container-test-driver/images.json
+++ b/lib/container-test-driver/images.json
@@ -28,5 +28,15 @@
       "sha256": "0xyp9pin8m6ys0gxk6spq83dgdfl3malbvps7v78hrp7sjg3rp0k",
       "url": "https://cloud-images.ubuntu.com/releases/noble/release-20260321/ubuntu-24.04-server-cloudimg-amd64-root.tar.xz"
     }
+  },
+  "ubuntu-26_04": {
+    "aarch64-linux": {
+      "sha256": "077i5k2yd36bwayybvh475v5lyr9ilb7c847n99mmyj8p3lcb5d7",
+      "url": "https://cloud-images.ubuntu.com/releases/resolute/release-20260731/ubuntu-26.04-server-cloudimg-arm64-root.tar.xz"
+    },
+    "x86_64-linux": {
+      "sha256": "12318m2bikm6cgzlwa215301y9vf3p4666yb7lxmik4z4llp42m8",
+      "url": "https://cloud-images.ubuntu.com/releases/resolute/release-20260731/ubuntu-26.04-server-cloudimg-amd64-root.tar.xz"
+    }
   }
 }
diff --git a/testFlake/flake.lock b/testFlake/flake.lock
index bdb65f6b..7eadaa0f 100644
--- a/testFlake/flake.lock
+++ b/testFlake/flake.lock
@@ -149,11 +149,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1783265394,
-        "narHash": "sha256-cq4YfNFGYzp0NItZP8tEC7xUI8OSgY4fj75AU/NSaPM=",
+        "lastModified": 1786699124,
+        "narHash": "sha256-VtY2VR600/5vFcl4diMpf2sbliY0W+g3GW2VnyDUFS8=",
         "owner": "numtide",
         "repo": "nix-vm-test",
-        "rev": "1a587212d2ac8b669c6c32499015f996506b6ba5",
+        "rev": "ecce8be2ede211ee1c2bc603d188e0bf41376ca8",
         "type": "github"
       },
       "original": {
diff --git a/tools/update-images.py b/tools/update-images.py
index 63f71e7f..df2ad3f6 100755
--- a/tools/update-images.py
+++ b/tools/update-images.py
@@ -22,6 +22,7 @@
 UBUNTU_RELEASES = {
     "ubuntu-22_04": "https://cloud-images.ubuntu.com/releases/jammy/",
     "ubuntu-24_04": "https://cloud-images.ubuntu.com/releases/noble/",
+    "ubuntu-26_04": "https://cloud-images.ubuntu.com/releases/resolute/",
 }
 
 DEBIAN_RELEASES = {