diff --git a/python/lib/dependabot/python/file_parser.rb b/python/lib/dependabot/python/file_parser.rb
index 07ea6a47b1..9d540be242 100644
--- a/python/lib/dependabot/python/file_parser.rb
+++ b/python/lib/dependabot/python/file_parser.rb
@@ -97,12 +97,12 @@ def package_manager
       def detected_package_manager
         setup_python_environment if Dependabot::Experiments.enabled?(:enable_file_parser_python_local)
 
+        return PipCompilePackageManager.new(T.must(detect_pipcompile_version)) if detect_pipcompile_version
+
         return PipenvPackageManager.new(T.must(detect_pipenv_version)) if detect_pipenv_version
 
         return PoetryPackageManager.new(T.must(detect_poetry_version)) if detect_poetry_version
 
-        return PipCompilePackageManager.new(T.must(detect_pipcompile_version)) if detect_pipcompile_version
-
         PipPackageManager.new(detect_pip_version)
       end
 
@@ -337,7 +337,7 @@ def check_requirements(requirements)
       end
 
       def pipcompile_in_file
-        requirement_files.any? { |f| f.end_with?(".in") }
+        requirement_files.any? { |f| f.name.end_with?(PipCompilePackageManager::MANIFEST_FILENAME) }
       end
 
       def pipenv_files
diff --git a/python/lib/dependabot/python/package_manager.rb b/python/lib/dependabot/python/package_manager.rb
index 21ba731da9..effe79d873 100644
--- a/python/lib/dependabot/python/package_manager.rb
+++ b/python/lib/dependabot/python/package_manager.rb
@@ -92,6 +92,7 @@ class PipCompilePackageManager < Dependabot::Ecosystem::VersionManager
       extend T::Sig
 
       NAME = "pip-compile"
+      MANIFEST_FILENAME = ".in"
 
       SUPPORTED_VERSIONS = T.let([].freeze, T::Array[Dependabot::Version])