diff --git a/features/src/cuda/README.md b/features/src/cuda/README.md
index f398f6d7b..d1ae7bc68 100644
--- a/features/src/cuda/README.md
+++ b/features/src/cuda/README.md
@@ -15,7 +15,7 @@ A feature to install the NVIDIA CUDA Toolkit
 
 | Options Id | Description | Type | Default Value |
 |-----|-----|-----|-----|
-| version | Version of the CUDA Toolkit to install. | string | 13.3 |
+| version | Version of the CUDA Toolkit to install. | string | 13.4 |
 | cuDNNVersion | Version of cuDNN to install. | string | 8 |
 | installCompilers | Install NVIDIA CUDA Compiler (nvcc) | boolean | true |
 | installProfilers | Install NVIDIA NSight Systems Profiler (nsys) | boolean | true |
diff --git a/features/src/cuda/devcontainer-feature.json b/features/src/cuda/devcontainer-feature.json
index ff37b2e22..aebf75825 100644
--- a/features/src/cuda/devcontainer-feature.json
+++ b/features/src/cuda/devcontainer-feature.json
@@ -7,6 +7,7 @@
     "version": {
       "type": "string",
       "proposals": [
+        "13.4",
         "13.3",
         "13.2",
         "13.1",
@@ -29,7 +30,7 @@
         "11.2",
         "11.1"
       ],
-      "default": "13.3",
+      "default": "13.4",
       "description": "Version of the CUDA Toolkit to install."
     },
     "cuDNNVersion": {
diff --git a/features/src/cuda/install.sh b/features/src/cuda/install.sh
index beca08050..57c0bb3eb 100644
--- a/features/src/cuda/install.sh
+++ b/features/src/cuda/install.sh
@@ -37,7 +37,7 @@ export OSNAME_PREV="$(
     echo "$ID$((major - (major % 2) - 2))${minor}";
 )";
 
-VERSION="${CUDA_VERSION:-${VERSION:-13.3.0}}";
+VERSION="${CUDA_VERSION:-${VERSION:-13.4.3}}";
 
 if [[ "$NVARCH" == aarch64 ]]; then
     NVARCH="sbsa";
diff --git a/features/test/cuda/test.sh b/features/test/cuda/test.sh
index 95b436e88..38d0b291a 100644
--- a/features/test/cuda/test.sh
+++ b/features/test/cuda/test.sh
@@ -17,12 +17,12 @@ source dev-container-features-test-lib
 
 # Feature-specific tests
 # The 'check' command comes from the dev-container-features-test-lib.
-check "CUDA version" bash -c "echo '$CUDA_VERSION' | grep '13.3.0'";
+check "CUDA version" bash -c "echo '$CUDA_VERSION' | grep '13.4.3'";
 check "CUDA major version" bash -c "echo '$CUDA_VERSION_MAJOR' | grep '13'";
-check "CUDA minor version" bash -c "echo '$CUDA_VERSION_MINOR' | grep '3'";
-check "CUDA patch version" bash -c "echo '$CUDA_VERSION_PATCH' | grep '0'";
-check "nvcc version" bash -c "nvcc --version | grep 'release 13.3'";
-check "installed" stat /usr/local/cuda-13.3 /usr/local/cuda
+check "CUDA minor version" bash -c "echo '$CUDA_VERSION_MINOR' | grep '4'";
+check "CUDA patch version" bash -c "echo '$CUDA_VERSION_PATCH' | grep '2'";
+check "nvcc version" bash -c "nvcc --version | grep 'release 13.4'";
+check "installed" stat /usr/local/cuda-13.4 /usr/local/cuda
 check "nvcc exists and is on path" which nvcc
 
 # Report result
diff --git a/windows/image/installers/install-cuda.ps1 b/windows/image/installers/install-cuda.ps1
index 46efd4985..fad494351 100644
--- a/windows/image/installers/install-cuda.ps1
+++ b/windows/image/installers/install-cuda.ps1
@@ -16,9 +16,9 @@ if ($build -lt 0) {
     $build = 0
 }
 
-# Use 13.4.2 for 13.4
+# Use 13.4.3 for 13.4
 if ($major -eq 13 -and $minor -eq 4) {
-    $build = 2
+    $build = 3
 }
 
 # mmb == major minor build