diff --git a/pkgs/applications/networking/cluster/k3s/1_35/chart-versions.nix b/pkgs/applications/networking/cluster/k3s/1_35/chart-versions.nix
new file mode 100644
index 000000000000..ae882e7da509
--- /dev/null
+++ b/pkgs/applications/networking/cluster/k3s/1_35/chart-versions.nix
@@ -0,0 +1,10 @@
+{
+  traefik-crd = {
+    url = "https://k3s.io/k3s-charts/assets/traefik-crd/traefik-crd-37.1.1+up37.1.0.tgz";
+    sha256 = "0q568ffjhxmw87fzwafxlxrzx2lgcqlqbwj87pbc2xszh9pyakyd";
+  };
+  traefik = {
+    url = "https://k3s.io/k3s-charts/assets/traefik/traefik-37.1.1+up37.1.0.tgz";
+    sha256 = "0gpcr6zfbncvp2sjjwzg732k4xfr5ba0pbc5x08lgwvibqpp4r27";
+  };
+}
diff --git a/pkgs/applications/networking/cluster/k3s/1_34/go_runc_require.patch b/pkgs/applications/networking/cluster/k3s/1_35/go_runc_require.patch
similarity index 100%
rename from pkgs/applications/networking/cluster/k3s/1_34/go_runc_require.patch
rename to pkgs/applications/networking/cluster/k3s/1_35/go_runc_require.patch
diff --git a/pkgs/applications/networking/cluster/k3s/1_35/images-versions.json b/pkgs/applications/networking/cluster/k3s/1_35/images-versions.json
new file mode 100644
index 000000000000..aa290e65619b
--- /dev/null
+++ b/pkgs/applications/networking/cluster/k3s/1_35/images-versions.json
@@ -0,0 +1,26 @@
+{
+  "airgap-images-amd64-tar-gz": {
+    "url": "https://github.com/k3s-io/k3s/releases/download/v1.35.0%2Bk3s1/k3s-airgap-images-amd64.tar.gz",
+    "sha256": "af7ce67f0a8c457618a492ba995cc645d8ad13512008b88db97719941c39389a"
+  },
+  "airgap-images-amd64-tar-zst": {
+    "url": "https://github.com/k3s-io/k3s/releases/download/v1.35.0%2Bk3s1/k3s-airgap-images-amd64.tar.zst",
+    "sha256": "2e3d6d14bbbeb8c16f1849cca8da48887c5a7ddceb1cc2bf60be63e4fa8c63f3"
+  },
+  "airgap-images-arm-tar-gz": {
+    "url": "https://github.com/k3s-io/k3s/releases/download/v1.35.0%2Bk3s1/k3s-airgap-images-arm.tar.gz",
+    "sha256": "82cf1310db1bfac5733c5c16864034c6c7c7affc60c39be610ce7cf169631ef5"
+  },
+  "airgap-images-arm-tar-zst": {
+    "url": "https://github.com/k3s-io/k3s/releases/download/v1.35.0%2Bk3s1/k3s-airgap-images-arm.tar.zst",
+    "sha256": "27407fd1553c89b8ccd3b45ad0fbdcd483c1a010e7b28b60b24a8e73b58aa783"
+  },
+  "airgap-images-arm64-tar-gz": {
+    "url": "https://github.com/k3s-io/k3s/releases/download/v1.35.0%2Bk3s1/k3s-airgap-images-arm64.tar.gz",
+    "sha256": "cb3d24f44c9f29da3421e99db0801f2a30b3e16c7032c423a9b631c0fc66a5fa"
+  },
+  "airgap-images-arm64-tar-zst": {
+    "url": "https://github.com/k3s-io/k3s/releases/download/v1.35.0%2Bk3s1/k3s-airgap-images-arm64.tar.zst",
+    "sha256": "b6cb3c06f19859d3a5fba54b305097e89d2a86b5bce9e8360a46b9d2e67da565"
+  }
+}
diff --git a/pkgs/applications/networking/cluster/k3s/1_35/versions.nix b/pkgs/applications/networking/cluster/k3s/1_35/versions.nix
new file mode 100644
index 000000000000..54a6fbdde470
--- /dev/null
+++ b/pkgs/applications/networking/cluster/k3s/1_35/versions.nix
@@ -0,0 +1,21 @@
+{
+  k3sVersion = "1.35.0+k3s1";
+  k3sCommit = "a6c6cd15c0c42ec9fce21f8ad5f42aa74fddb4f2";
+  k3sRepoSha256 = "0033m0vbysy2bcjfmam387580j1cmq6cys8diismgf8m5s64nivb";
+  k3sVendorHash = "sha256-S9GkT87C8qbuefH93Y6d0Y95NNuT6paNdDkmSDllFIY=";
+  chartVersions = import ./chart-versions.nix;
+  imagesVersions = builtins.fromJSON (builtins.readFile ./images-versions.json);
+  k3sRootVersion = "0.15.0";
+  k3sRootSha256 = "008n8xx7x36y9y4r24hx39xagf1dxbp3pqq2j53s9zkaiqc62hd0";
+  k3sCNIVersion = "1.8.0-k3s1";
+  k3sCNISha256 = "04xig5spp81l81781ixmk99ghiz8lk0p16zhcbja5mslfdjmc7vg";
+  containerdVersion = "2.1.5-k3s1";
+  containerdSha256 = "0n0g58d352i8wz0bqn87vgrd7z54j268cbmbp19fz68wmifm7fl8";
+  containerdPackage = "github.com/k3s-io/containerd/v2";
+  criCtlVersion = "1.35.0-k3s2";
+  flannelVersion = "v0.27.4";
+  flannelPluginVersion = "v1.8.0-flannel1";
+  kubeRouterVersion = "v2.6.3-k3s1";
+  criDockerdVersion = "v0.3.19-k3s3";
+  helmJobVersion = "v0.9.12-build20251215";
+}
diff --git a/pkgs/applications/networking/cluster/k3s/builder.nix b/pkgs/applications/networking/cluster/k3s/builder.nix
index 38835677408a..c6c5f758dfc8 100644
--- a/pkgs/applications/networking/cluster/k3s/builder.nix
+++ b/pkgs/applications/networking/cluster/k3s/builder.nix
@@ -399,6 +399,13 @@ buildGoModule (finalAttrs: {
       --replace-fail \
         "go list -mod=readonly -m -f '{{if .Replace}}{{.Replace.Version}}{{else}}{{.Version}}{{end}}' \$1" \
         "go list -mod=readonly -e -m -f '{{if .Replace}}{{.Replace.Version}}{{else}}{{.Version}}{{end}}' \$1"
+
+    # Can't use curl during the build, we use our own go version anyway.
+    # Fails quiet as this line is only present starting from 1.35
+    substituteInPlace scripts/version.sh \
+      --replace-quiet \
+        'VERSION_GOLANG="go"$(curl -sL "https://raw.githubusercontent.com''${PKG_KUBERNETES_K3S/github.com/}/refs/tags/''${VERSION_K8S_K3S}/.go-version")' \
+        ""
   '';
 
   # Important utilities used by the kubelet, see
diff --git a/pkgs/applications/networking/cluster/k3s/default.nix b/pkgs/applications/networking/cluster/k3s/default.nix
index 7825f8173191..2b9d5dbd54c8 100644
--- a/pkgs/applications/networking/cluster/k3s/default.nix
+++ b/pkgs/applications/networking/cluster/k3s/default.nix
@@ -43,11 +43,20 @@ in
       }
     ) extraArgs).overrideAttrs
       {
-        patches = [
-          # Adds explicit require of opencontainers/runc to go.mod before version.sh is called and
-          # removes it afterwards so that later build commands don't complain about inconsistent
-          # vendoring.
-          ./1_34/go_runc_require.patch
+        patches = [ ./go_runc_require.patch ];
+      };
+
+  k3s_1_35 =
+    (common (
+      (import ./1_35/versions.nix)
+      // {
+        updateScript = [
+          ./update-script.sh
+          "35"
         ];
+      }
+    ) extraArgs).overrideAttrs
+      {
+        patches = [ ./go_runc_require.patch ];
       };
 }
diff --git a/pkgs/applications/networking/cluster/k3s/go_runc_require.patch b/pkgs/applications/networking/cluster/k3s/go_runc_require.patch
new file mode 100644
index 000000000000..8d8d5912afd1
--- /dev/null
+++ b/pkgs/applications/networking/cluster/k3s/go_runc_require.patch
@@ -0,0 +1,18 @@
+# Adds explicit require of opencontainers/runc to go.mod before version.sh is called and
+# removes it afterwards so that later build commands don't complain about inconsistent
+# vendoring.
+diff --git a/scripts/package-cli b/scripts/package-cli
+index a15d754926..bc450dbe4e 100755
+--- a/scripts/package-cli
++++ b/scripts/package-cli
+@@ -3,7 +3,10 @@ set -e -x
+ 
+ cd $(dirname $0)/..
+ 
++runc_require=$(grep "github.com/opencontainers/runc" go.mod | awk -F '=> ' '{print $2}' | xargs -0 printf 'require %s')
++echo "$runc_require" >> go.mod
+ . ./scripts/version.sh
++sed -i '$d' go.mod
+ 
+ GO=${GO-go}
+ 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a3e4a621218c..58207a8984a4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11043,6 +11043,7 @@ with pkgs;
     k3s_1_32
     k3s_1_33
     k3s_1_34
+    k3s_1_35
     ;
   k3s = k3s_1_34;