diff --git a/dotfiles/config/hypr/hyprland/state.lua b/dotfiles/config/hypr/hyprland/state.lua
index 2a74c340..52a32111 100644
--- a/dotfiles/config/hypr/hyprland/state.lua
+++ b/dotfiles/config/hypr/hyprland/state.lua
@@ -61,7 +61,9 @@ return {
   tabbed_group_restore_workspace_prefix = "special:tabbed-monocle-restore-",
   current_layout = columns_layout,
   enable_nstack = true,
-  enable_hyprexpo = true,
+  -- Disabled 2026-06-11: live-preview backend SEGVs Hyprland (shouldRenderWindow
+  -- hook fires on every popup commit). Re-enable once fixed upstream.
+  enable_hyprexpo = false,
   enable_hyprwinview = true,
   enable_hyprtasking = false,
   enable_workspace_history = true,
diff --git a/nixos/flake.lock b/nixos/flake.lock
index 5fa43cc5..7a45054b 100644
--- a/nixos/flake.lock
+++ b/nixos/flake.lock
@@ -904,16 +904,17 @@
         ]
       },
       "locked": {
-        "lastModified": 1779879328,
-        "narHash": "sha256-YOnTi54JNKju0wsZ8ckP9IBV3w3fTrdyauWhrCcgjZI=",
+        "lastModified": 1779455466,
+        "narHash": "sha256-SBGT6GVkmpX5XoAf+oiVZWlv9xaNSWZeQ33HNIlrz0k=",
         "owner": "colonelpanic8",
         "repo": "hyprexpo",
-        "rev": "3a2f021956809e639e8411e9016c8e637b040c92",
+        "rev": "8bafe0dbc7c26a3269f7e0fa01e3fa3cf54a3161",
         "type": "github"
       },
       "original": {
         "owner": "colonelpanic8",
         "repo": "hyprexpo",
+        "rev": "8bafe0dbc7c26a3269f7e0fa01e3fa3cf54a3161",
         "type": "github"
       }
     },
diff --git a/nixos/flake.nix b/nixos/flake.nix
index 30056428..34330464 100644
--- a/nixos/flake.nix
+++ b/nixos/flake.nix
@@ -125,7 +125,11 @@
     };
 
     hyprexpo = {
-      url = "github:colonelpanic8/hyprexpo";
+      # Pinned: the live-preview backend (c19cc94+) installs a shouldRenderWindow
+      # hook that fires on every window/popup commit and SEGVs during normal use
+      # (CPopup::visible -> shouldRenderWindow). 8bafe0d is the last commit before
+      # that feature; still built against Hyprland 0.55.2.
+      url = "github:colonelpanic8/hyprexpo/8bafe0dbc7c26a3269f7e0fa01e3fa3cf54a3161";
       inputs.hyprland.follows = "hyprland";
     };