diff --git a/MANIFEST.in b/MANIFEST.in
index 99fc174bd..d022223cd 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,5 @@
 recursive-include include *.h
-recursive-include spacy *.pyx *.pxd *.txt *.cfg *.jinja
+recursive-include spacy *.pyx *.pxd *.txt *.cfg *.jinja *.toml
 include LICENSE
 include README.md
 include pyproject.toml
diff --git a/setup.cfg b/setup.cfg
index ff12d511a..fe484f92e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -44,7 +44,7 @@ install_requires =
     murmurhash>=0.28.0,<1.1.0
     cymem>=2.0.2,<2.1.0
     preshed>=3.0.2,<3.1.0
-    thinc>=8.0.9,<8.1.0
+    thinc>=8.0.10,<8.1.0
     blis>=0.4.0,<0.8.0
     wasabi>=0.8.1,<1.1.0
     srsly>=2.4.1,<3.0.0
diff --git a/spacy/tests/package/__init__.py b/spacy/tests/package/__init__.py
new file mode 100644
index 000000000..e69de29bb