diff --git a/src/poetry/console/commands/show.py b/src/poetry/console/commands/show.py
index d2557af1994..22e9b7b4f2c 100644
--- a/src/poetry/console/commands/show.py
+++ b/src/poetry/console/commands/show.py
@@ -75,7 +75,7 @@ def handle(self) -> int | None:
             )
             return 1
 
-        locked_repo = self.poetry.locker.locked_repository(True)
+        locked_repo = self.poetry.locker.locked_repository()
         root = self.project_with_activated_groups_only()
 
         # Show tree view if requested
diff --git a/src/poetry/installation/installer.py b/src/poetry/installation/installer.py
index de5216775a9..4a63e0767aa 100644
--- a/src/poetry/installation/installer.py
+++ b/src/poetry/installation/installer.py
@@ -190,7 +190,7 @@ def _do_refresh(self) -> int:
             if extra not in self._package.extras:
                 raise ValueError(f"Extra [{extra}] is not specified.")
 
-        locked_repository = self._locker.locked_repository(True)
+        locked_repository = self._locker.locked_repository()
         solver = Solver(
             self._package,
             self._pool,
@@ -214,7 +214,7 @@ def _do_install(self, local_repo: Repository) -> int:
         locked_repository = Repository()
         if self._update:
             if self._locker.is_locked() and not self._lock:
-                locked_repository = self._locker.locked_repository(True)
+                locked_repository = self._locker.locked_repository()
 
                 # If no packages have been whitelisted (The ones we want to update),
                 # we whitelist every package in the lock file.
@@ -240,7 +240,7 @@ def _do_install(self, local_repo: Repository) -> int:
         else:
             self._io.write_line("<info>Installing dependencies from lock file</>")
 
-            locked_repository = self._locker.locked_repository(True)
+            locked_repository = self._locker.locked_repository()
 
             if not self._locker.is_fresh():
                 self._io.write_error_line(
diff --git a/src/poetry/packages/locker.py b/src/poetry/packages/locker.py
index b35a7c6d6f5..80c24a4fb9f 100644
--- a/src/poetry/packages/locker.py
+++ b/src/poetry/packages/locker.py
@@ -86,7 +86,7 @@ def is_fresh(self) -> bool:
 
         return False
 
-    def locked_repository(self, with_dev_reqs: bool = False) -> Repository:
+    def locked_repository(self) -> Repository:
         """
         Searches and returns a repository of locked packages.
         """
@@ -98,13 +98,7 @@ def locked_repository(self, with_dev_reqs: bool = False) -> Repository:
 
         lock_data = self.lock_data
         packages = Repository()
-
-        if with_dev_reqs:
-            locked_packages = lock_data["package"]
-        else:
-            locked_packages = [
-                p for p in lock_data["package"] if p["category"] == "main"
-            ]
+        locked_packages = lock_data["package"]
 
         if not locked_packages:
             return packages
@@ -317,7 +311,6 @@ def get_project_dependency_packages(
         self,
         project_requires: list[Dependency],
         project_python_marker: BaseMarker | None = None,
-        dev: bool = False,
         extras: bool | Sequence[str] | None = None,
     ) -> Iterator[DependencyPackage]:
         # Apply the project python marker to all requirements.
@@ -329,7 +322,7 @@ def get_project_dependency_packages(
                 marked_requires.append(require)
             project_requires = marked_requires
 
-        repository = self.locked_repository(with_dev_reqs=dev)
+        repository = self.locked_repository()
 
         # Build a set of all packages required by our selected extras
         extra_package_names: set[str] | None = None
diff --git a/tests/console/commands/test_lock.py b/tests/console/commands/test_lock.py
index f12837d6bc3..dae977a1d27 100644
--- a/tests/console/commands/test_lock.py
+++ b/tests/console/commands/test_lock.py
@@ -129,9 +129,7 @@ def test_lock_no_update(
     )
     poetry_with_old_lockfile.set_locker(locker)
 
-    locked_repository = poetry_with_old_lockfile.locker.locked_repository(
-        with_dev_reqs=True
-    )
+    locked_repository = poetry_with_old_lockfile.locker.locked_repository()
     assert (
         poetry_with_old_lockfile.locker.lock_data["metadata"].get("lock-version")
         == "1.0"
@@ -144,7 +142,7 @@ def test_lock_no_update(
         lock=poetry_with_old_lockfile.pyproject.file.path.parent / "poetry.lock",
         local_config={},
     )
-    packages = locker.locked_repository(True).packages
+    packages = locker.locked_repository().packages
 
     assert len(packages) == len(locked_repository.packages)