diff --git a/.github/workflows/compile.yml b/.github/workflows/compile.yml
index ece1b1f..1c11a6b 100644
--- a/.github/workflows/compile.yml
+++ b/.github/workflows/compile.yml
@@ -20,33 +20,36 @@ jobs:
       GLFW_INCLUDE: /usr/include
       GLFW_LIB: /usr/lib/x86_64-linux-gnu
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           path: source/demo
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: antono2/imgui
+          ref: ddda851313cfe08038c32694123763dff34d2a4e
           path: source/modules/antono2/imgui
           submodules: recursive
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: antono2/vulkan
+          ref: v2.0.0
           path: source/modules/antono2/vulkan
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: antono2/glfw
+          ref: e9a367938577919b4a5140a477c1250112978d8e
           path: source/modules/antono2/glfw
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: vlang/v
           ref: 1f128c94619fb6e4863c5f81883e1b860405c8fa
           path: toolchain/v
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: vlang/vc
           ref: 4a1ba4d772f19c2752c9850d3b5421c71f54a4d6
           path: toolchain/v/vc
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: vlang/tccbin
           ref: d6e7ac1b1bcc98aed734a6ecbfa8509f24606c74
@@ -74,35 +77,36 @@ jobs:
     env:
       VMODULES: ${{ github.workspace }}/source/modules
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           path: source/demo
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: antono2/imgui
+          ref: ddda851313cfe08038c32694123763dff34d2a4e
           path: source/modules/antono2/imgui
           submodules: recursive
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: antono2/vulkan
-          ref: d9ad9fc5151aa19f58cd2fed1b6bcda9b210f098
+          ref: v2.0.0
           path: source/modules/antono2/vulkan
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: antono2/glfw
           ref: 3d7c1ddacb7215a7bbeb5fef0d7a68c90ba392ed
           path: source/modules/antono2/glfw
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: vlang/v
           ref: 1f128c94619fb6e4863c5f81883e1b860405c8fa
           path: toolchain/v
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: vlang/vc
           ref: 4a1ba4d772f19c2752c9850d3b5421c71f54a4d6
           path: toolchain/v/vc
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           repository: zeux/volk
           ref: 58689c063427f5bad4f133625049b1a3c5dd8287
@@ -161,6 +165,105 @@ jobs:
             if (-not (Test-Path $Artifact)) { throw "Missing Windows artifact: $Artifact" }
           }
 
+  strict-v3-frontend:
+    name: Required pinned V3 frontend
+    runs-on: ubuntu-24.04
+    timeout-minutes: 45
+    env:
+      VMODULES: ${{ github.workspace }}/source/modules
+      VULKAN_SDK: /usr
+      GLFW_INCLUDE: /usr/include
+      GLFW_LIB: /usr/lib/x86_64-linux-gnu
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          path: source/demo
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: antono2/imgui
+          ref: ddda851313cfe08038c32694123763dff34d2a4e
+          path: source/modules/antono2/imgui
+          submodules: recursive
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: antono2/vulkan
+          ref: 42e6c381e37952ef07f4cd560c9996fd2435cd41
+          path: source/modules/antono2/vulkan
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: antono2/glfw
+          ref: e9a367938577919b4a5140a477c1250112978d8e
+          path: source/modules/antono2/glfw
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: vlang/v
+          ref: f59b886d2564e37d8626d715236fdfa928e13dda
+          path: toolchain/v
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: vlang/vc
+          ref: 4598bc7e4894c154b27391e4442005fff2fbbd68
+          path: toolchain/v/vc
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: vlang/tccbin
+          ref: d6e7ac1b1bcc98aed734a6ecbfa8509f24606c74
+          path: toolchain/v/thirdparty/tcc
+      - name: Build pinned V3 compiler
+        run: |
+          make -C toolchain/v local=1
+          echo "$GITHUB_WORKSPACE/toolchain/v" >> "$GITHUB_PATH"
+      - name: Check demo with V3
+        run: v -new-compiler -check -path "$VMODULES/antono2|@vlib|@vmodules" source/demo
+
+  linux-v-master:
+    name: Advisory current V master and dependency masters
+    continue-on-error: true
+    runs-on: ubuntu-24.04
+    timeout-minutes: 45
+    env:
+      VMODULES: ${{ github.workspace }}/source/modules
+      VULKAN_SDK: /usr
+      GLFW_INCLUDE: /usr/include
+      GLFW_LIB: /usr/lib/x86_64-linux-gnu
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          path: source/demo
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: antono2/imgui
+          ref: master
+          path: source/modules/antono2/imgui
+          submodules: recursive
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: antono2/vulkan
+          ref: master
+          path: source/modules/antono2/vulkan
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: antono2/glfw
+          ref: master
+          path: source/modules/antono2/glfw
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          repository: vlang/v
+          ref: master
+          path: toolchain/v
+      - name: Build current V master
+        run: |
+          make -C toolchain/v
+          echo "$GITHUB_WORKSPACE/toolchain/v" >> "$GITHUB_PATH"
+      - name: Install native dependencies
+        run: sudo apt-get update && sudo apt-get install -y build-essential cmake libglfw3-dev libvulkan-dev libvulkan-volk-dev pkg-config
+      - name: Build and compile demo with V3
+        run: |
+          cd source/modules/antono2/imgui
+          v run build_vimgui.vsh --linkage shared --glfw system
+          cd "$GITHUB_WORKSPACE"
+          v -no-memory-limit -path "$VMODULES/antono2|@vlib|@vmodules" -cc gcc -o "$RUNNER_TEMP/v_imgui_demo" source/demo
+
   required-checks:
     if: always()
     needs: [ubuntu24, windows2022]
diff --git a/README.md b/README.md
index fef69c9..17e6379 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,8 @@
 
 This repository contains the GLFW/Vulkan example used to validate the
 [`antono2/imgui`](https://github.com/antono2/imgui) V bindings.
+The required CI builds use `antono2.vulkan@v2.0.0` and fixed ImGui, GLFW,
+and V compiler revisions. An advisory job checks their moving master branches.
 
 ## Recommended quick start
 
diff --git a/examples/glfw_vulkan/main.c.v b/examples/glfw_vulkan/main.c.v
index bc31083..6420275 100644
--- a/examples/glfw_vulkan/main.c.v
+++ b/examples/glfw_vulkan/main.c.v
@@ -151,7 +151,7 @@ pub fn main() {
     if fb_width > 0 && fb_height > 0
      && (app.swapchain_rebuild || app.main_window_data.width != fb_width || app.main_window_data.height != fb_height) {
       impl_vulkan.set_min_image_count(app.min_image_count)
-      impl_vulkan.create_or_resize_window(app.instance, app.physical_device, app.device, wd, app.queue_family, app.allocator, fb_width, fb_height, app.min_image_count)
+      impl_vulkan.create_or_resize_window(app.instance, app.physical_device, app.device, mut wd, app.queue_family, app.allocator, fb_width, fb_height, app.min_image_count)
       app.main_window_data.frame_index = 0
       app.swapchain_rebuild = false
     }
@@ -468,7 +468,7 @@ pub fn (mut app App) setup_vulkan_window(mut wd &impl_vulkan.Window, surface vk.
 
   // Create SwapChain, RenderPass, Framebuffer, etc.
   assert app.min_image_count >= 2
-  impl_vulkan.create_or_resize_window(app.instance, app.physical_device, app.device, wd, app.queue_family, app.allocator, width, height, app.min_image_count)
+  impl_vulkan.create_or_resize_window(app.instance, app.physical_device, app.device, mut wd, app.queue_family, app.allocator, width, height, app.min_image_count)
 }
 
 pub fn (mut app App) frame_render(mut wd impl_vulkan.Window, draw_data &imgui.ImDrawData) {