diff --git a/local/recipes/kde/kf6-kwayland/recipe.toml b/local/recipes/kde/kf6-kwayland/recipe.toml
index 895f865797..8b3662f79d 100644
--- a/local/recipes/kde/kf6-kwayland/recipe.toml
+++ b/local/recipes/kde/kf6-kwayland/recipe.toml
@@ -16,6 +16,8 @@ dependencies = [
     "libwayland",
     "wayland-protocols",
     "plasma-wayland-protocols",
+    # <linux/input.h> for fakeinput.cpp (Linux input event codes).
+    "redbear-input-headers",
 ]
 script = """
 DYNAMIC_INIT
diff --git a/local/recipes/kde/plasma-wayland-protocols/recipe.toml b/local/recipes/kde/plasma-wayland-protocols/recipe.toml
index f307df99fa..8d20455fae 100644
--- a/local/recipes/kde/plasma-wayland-protocols/recipe.toml
+++ b/local/recipes/kde/plasma-wayland-protocols/recipe.toml
@@ -38,7 +38,7 @@ cat > "${COOKBOOK_STAGE}/usr/lib/cmake/PlasmaWaylandProtocols/PlasmaWaylandProto
 set(PLASMA_WAYLAND_PROTOCOLS_DIR "${CMAKE_CURRENT_LIST_DIR}/../../../share/plasma-wayland-protocols")
 EOF
 cat > "${COOKBOOK_STAGE}/usr/lib/cmake/PlasmaWaylandProtocols/PlasmaWaylandProtocolsConfigVersion.cmake" << 'EOF'
-set(PACKAGE_VERSION "1.16.0")
+set(PACKAGE_VERSION "1.21.0")
 if(PACKAGE_FIND_VERSION VERSION_GREATER PACKAGE_VERSION)
   set(PACKAGE_VERSION_COMPATIBLE FALSE)
 else()
diff --git a/src/cook/cook_build.rs b/src/cook/cook_build.rs
index ff97af773c..ccc235e0ec 100644
--- a/src/cook/cook_build.rs
+++ b/src/cook/cook_build.rs
@@ -496,7 +496,12 @@ pub fn build(
         };
     }
 
-    if !check_source {
+    // Dependencies normally skip the source check for speed. But --force-rebuild
+    // must always take effect here — otherwise this early-return fires before the
+    // force_rebuild handling below, so a stale binary-store artifact whose source
+    // changed could never be regenerated (the KWayland/plasma-wayland-protocols
+    // 1.16-vs-1.21 stale-cache bug).
+    if !check_source && !cook_config.force_rebuild {
         // TODO: when stage_dirs does not exist due to clean_target was true, extract from stage.pkgar?
         let stage_present = stage_pkgars.iter().all(|file| file.is_file());
         if stage_present && auto_deps_file.is_file() {