diff --git a/scripts/lib/backend-filter.mjs b/scripts/lib/backend-filter.mjs
index 21c2800e4..90b4b987c 100644
--- a/scripts/lib/backend-filter.mjs
+++ b/scripts/lib/backend-filter.mjs
@@ -436,6 +436,27 @@ export const SHARED_BUILD_INPUTS = [
     linux: always,
     darwin: always,
   },
+  {
+    // Same posture as the scripts/build/ catch-all above, and for the same
+    // reason. .docker/ holds the per-backend compile and build-target scripts
+    // (llama-cpp, turboquant, bonsai, ik-llama-cpp) plus inputs every
+    // Dockerfile consumes (apt-mirror.sh, install-base-deps.sh). Nothing
+    // matched any of them before, which is how #11346 shipped without a single
+    // backend job: it changed how ROCm llama.cpp compiles, touching only
+    // .docker/llama-cpp-build-target.sh and a `*_test.sh` that the rule above
+    // deliberately carves out, so the filter selected zero entries and every
+    // backend job reported "skipping".
+    //
+    // A rule cannot see which file matched it, only the matrix entry, so
+    // narrowing `.docker/<name>-compile.sh` to the backend named by its prefix
+    // would mean threading the filename through matchedSharedRules. Until
+    // someone wants that, take the full matrix: these files are edited a
+    // handful of times a release, and a shared build input silently shipping
+    // to nothing is the failure this list exists to prevent.
+    matches: file => file.startsWith(".docker/"),
+    linux: always,
+    darwin: always,
+  },
 ];
 
 // The matrix stores dockerfiles as "./backend/Dockerfile.python"; changed-file
diff --git a/scripts/lib/backend-filter_test.mjs b/scripts/lib/backend-filter_test.mjs
index f419afd3a..897665bfe 100644
--- a/scripts/lib/backend-filter_test.mjs
+++ b/scripts/lib/backend-filter_test.mjs
@@ -204,6 +204,29 @@ test("an unclassified scripts/build/ file conservatively rebuilds everything", (
   assert.equal(filteredDarwin.length, includesDarwin.length);
 });
 
+// #11346 changed how ROCm llama.cpp compiles and built nothing: it touched only
+// .docker/llama-cpp-build-target.sh and a *_test.sh, no rule matched either, so
+// every backend job reported "skipping".
+test("a .docker/ compile script rebuilds the backends it compiles", () => {
+  const { filtered } = run([
+    ".docker/llama-cpp-build-target.sh",
+    "scripts/build/llama-cpp-build-target_test.sh",
+  ]);
+
+  assert.ok(filtered.length > 0, ".docker/ change selected no entries");
+  assert.ok(
+    filtered.some(e => e.backend === "llama-cpp"),
+    "llama-cpp was not selected by a change to its own compile script",
+  );
+});
+
+test("a shared .docker/ input rebuilds everything", () => {
+  const { filtered, filteredDarwin } = run([".docker/apt-mirror.sh"]);
+
+  assert.equal(filtered.length, includes.length);
+  assert.equal(filteredDarwin.length, includesDarwin.length);
+});
+
 test("tests for the packaging scripts do not rebuild anything", () => {
   const { filtered, filteredDarwin } = run([
     "scripts/build/package-gpu-libs_test.sh",