diff --git a/builder/mypy_boto3_builder/writers/__ini__.py b/builder/mypy_boto3_builder/writers/__init__.py
similarity index 100%
rename from builder/mypy_boto3_builder/writers/__ini__.py
rename to builder/mypy_boto3_builder/writers/__init__.py
diff --git a/builder/setup.py b/builder/setup.py
index 290b72c4..cb7bc8bc 100644
--- a/builder/setup.py
+++ b/builder/setup.py
@@ -20,7 +20,7 @@
     author="Vlad Emelianov",
     author_email="vlad.emelianov.nz@gmail.com",
     description="Builder for mypy-boto3.",
-    classifiers=(
+    classifiers=[
         "Development Status :: 3 - Alpha",
         "Environment :: Console",
         "License :: OSI Approved :: MIT License",
@@ -32,8 +32,9 @@
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3 :: Only",
+        "Programming Language :: Python :: Implementation :: CPython",
         "Typing :: Typed",
-    ),
+    ],
     long_description=long_description,
     long_description_content_type="text/markdown",
     entry_points={
diff --git a/scripts/install.sh b/scripts/install.sh
index e5d86931..703bf32c 100755
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -7,7 +7,7 @@ OUTPUT_PATH=${ROOT_PATH}/mypy_boto3_output
 install_package() {
     cd $1
     echo "Installing $1"
-
+    rm -rf build __pycache__
     python setup.py develop > /dev/null
 }
 export -f install_package