diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index daca95b..8d06284 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ env:
 
 jobs:
   check:
-    name: Check against copper-rs master
+    name: Check against the matching Copper stack
     runs-on: ubuntu-latest
     steps:
       - name: Check out Zed
@@ -24,11 +24,11 @@ jobs:
           path: zed
           submodules: recursive
 
-      - name: Check out copper-rs master
+      - name: Check out the matching Copper stack
         uses: actions/checkout@v6
         with:
           repository: copper-project/copper-rs
-          ref: master
+          ref: gbin/self-describing-logs-payloads
           path: copper-rs
 
       - name: Install Rust
diff --git a/components/sources/cu_zed/Cargo.toml b/components/sources/cu_zed/Cargo.toml
index 88e0a07..9810830 100644
--- a/components/sources/cu_zed/Cargo.toml
+++ b/components/sources/cu_zed/Cargo.toml
@@ -18,6 +18,10 @@ environments = ["host"]
 host_os = ["linux"]
 
 [features]
+self-describing-logs = [
+  "cu29/self-describing-logs",
+  "cu-sensor-payloads/self-describing-logs",
+]
 zed-rerun-demo = []
 
 [dependencies]
diff --git a/components/sources/cu_zed/src/payloads.rs b/components/sources/cu_zed/src/payloads.rs
index f7d32ae..a3f0555 100644
--- a/components/sources/cu_zed/src/payloads.rs
+++ b/components/sources/cu_zed/src/payloads.rs
@@ -32,7 +32,7 @@ macro_rules! impl_f32_raster_payload {
         {
             pub seq: u64,
             pub format: ZedRasterFormat,
-            #[reflect(ignore)]
+            #[cfg_attr(not(feature = "self-describing-logs"), reflect(ignore))]
             pub buffer_handle: CuHandle<A>,
         }