diff --git a/.gitignore b/.gitignore
index fb3aabbc2586ac14da7cf5de221ec6fd5d3a2170..c5414848cf78eda3bf513d1d7497d0fe3d73c494 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,8 @@
+# Files generated by the tests
+dict.png
+dict1.png
+dict2.png
+
 *.pyc
 *.pyo
 *.sublime*
diff --git a/requirements.txt b/requirements.txt
index 2e627a257559336fcd7a3b583f6f11e38e9abec7..436f85ec0eb0ee73556f23fe0b6f299b329b9fc6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,4 @@
-Cython>=0.29
 numpy>=1.12
 Pillow>=6.0
 scipy>=1.0
-setuptools>=46.1
-six>=1.12
\ No newline at end of file
+setuptools>=46.1
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index 70087583b473a8dea1e035fe86a0441b4181ac24..36323ccb8064b0b64a0d3ec42ed98810e0686f24 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 # Inside of setup.cfg
 [metadata]
-description-file = README.md
+description_file = README.md
 
 [global]
 verbose = 1