diff --git a/mesonbuild/dependencies/detect.py b/mesonbuild/dependencies/detect.py
index 9b41b669aee1..af569fc35140 100644
--- a/mesonbuild/dependencies/detect.py
+++ b/mesonbuild/dependencies/detect.py
@@ -25,7 +25,7 @@
 from .. import mlog
 
 if T.TYPE_CHECKING:
-    from typing_extensions import TypedDict
+    from typing_extensions import Literal, TypedDict
 
     from ..environment import Environment
     from ..interpreter.kwargs import Dependency as DependencyKw
@@ -105,9 +105,11 @@ def get_dep_identifier(name: str, kwargs: DependencyKw) -> DependencyCacheKey:
             continue
         # Mypy doesn't (yet) understand iterating a TypedDict, and doesn't know that k is valid
         if isinstance(v, list):
-            nkwargs[k] = tuple(v)  # type: ignore[literal-required]
+            k = T.cast("Literal['cmake_args', 'cmake_module_path', 'components', 'modules', 'optional_modules']", k)
+            nkwargs[k] = tuple(v)
         else:
-            nkwargs[k] = v  # type: ignore[literal-required]
+            k = T.cast("Literal['name', 'cmake_package_version', 'language', 'main', 'method', 'private_headers', 'static', 'embed']", k)
+            nkwargs[k] = v
 
     return DependencyCacheKey(name, **nkwargs)