diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bae7e83..4494584 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,18 +21,40 @@ jobs:
       CMAKE_PREFIX_PATH: /opt/toolchains
 
     steps:
-      - name: Checkout code
+      - name: 💾 Cache Zephyr Workspace
+        uses: actions/cache@v4
+        with:
+          path: zephyr-workspace
+          key: zephyr-workspace-${{ hashFiles('zephyr-workspace/zephyr/west.yml') }}
+
+      - name: 🧹 Clean Zephyr Manifest Directory
+        # Clean the manifest directory to ensure a fresh start
+        run: |
+          rm -rf zephyr-workspace/zephyr-esp32-example
+          rm -rf zephyr-workspace/.west
+
+      - name: ✅ Checkout code
         uses: actions/checkout@v4
         with:
           path: zephyr-workspace/zephyr-esp32-example
 
       - name: ♻️ Initialize Zephyr Workspace
-        # Set up the Zephyr workspace and install the Python dependencies
+        # Set up the Zephyr workspace
         run: |
           cd zephyr-workspace
           rm -rf .west
           west init -l zephyr-esp32-example
           west update --narrow -o=--depth=1
+
+      - name: 💾 Cache ESP32 Blobs
+        uses: actions/cache@v4
+        with:
+          path: zephyr-workspace/modules/hal/espressif/zephyr/blobs
+          key: zephyr-esp32-blobs-${{ hashFiles('zephyr-workspace/zephyr/west.yml') }}
+
+      - name: ⬇️ Fetch ESP32 Blobs
+        run: |
+          cd zephyr-workspace
           west blobs fetch hal_espressif
 
       - name: 💾 Cache ~/.cache/ccache
diff --git a/boards/esp32s3_devkitc_esp32s3_procpu.overlay b/boards/esp32s3_devkitc_esp32s3_procpu.overlay
index b417db0..44eee6f 100644
--- a/boards/esp32s3_devkitc_esp32s3_procpu.overlay
+++ b/boards/esp32s3_devkitc_esp32s3_procpu.overlay
@@ -11,3 +11,8 @@
 &coretemp {
 	status = "okay";
 };
+
+/* 2MB psram. This assumes target board is the ESP32-S3-DevKitC-1-N8R2 */
+&psram0 {
+	size = <DT_SIZE_M(2)>;
+};
diff --git a/west.yml b/west.yml
index adff06f..85f7e14 100644
--- a/west.yml
+++ b/west.yml
@@ -2,7 +2,7 @@ manifest:
   projects:
     - name: zephyr
       url: https://github.com/zephyrproject-rtos/zephyr
-      revision: v4.0.0
+      revision: v4.1.0
       import:
         # Limit the Zephyr modules to the required set
         name-allowlist:
@@ -13,4 +13,4 @@ manifest:
     - name: memfault-firmware-sdk
       url: https://github.com/memfault/memfault-firmware-sdk
       path: modules/lib/memfault-firmware-sdk
-      revision: 1.17.0
+      revision: 1.24.0