diff --git a/pkgs/by-name/mi/mistral-vibe/package.nix b/pkgs/by-name/mi/mistral-vibe/package.nix
index adbeb158d070..0552f7cc8946 100644
--- a/pkgs/by-name/mi/mistral-vibe/package.nix
+++ b/pkgs/by-name/mi/mistral-vibe/package.nix
@@ -22,6 +22,15 @@ let
           hash = "sha256-1KVy9s+zjlB4w7E45PMCWRxPus24bgBmmM3k2R9d+Jg=";
         };
       });
+      # 112/2907 tests fail with textual 8.2.5:
+      # textual.app.InvalidThemeError: Theme 'textual-ansi' has not been registered.
+      textual = prev.textual.overridePythonAttrs (old: rec {
+        version = "8.2.4";
+        src = old.src.override {
+          tag = "v${version}";
+          hash = "sha256-827cm9pcj1o1FYeaoWKCJ6dEyXeDop4kYd205cySTfg=";
+        };
+      });
     };
   };
   python3Packages = python.pkgs;