diff --git a/environment.yml b/environment.yml
deleted file mode 100644
index b235bb56..00000000
--- a/environment.yml
+++ /dev/null
@@ -1,88 +0,0 @@
-name: doccano
-channels:
-  - defaults
-dependencies:
-  - _libgcc_mutex=0.1=main
-  - ca-certificates=2019.5.15=0
-  - certifi=2019.6.16=py37_0
-  - libedit=3.1.20181209=hc058e9b_0
-  - libffi=3.2.1=hd88cf55_4
-  - libgcc-ng=9.1.0=hdf63c60_0
-  - libstdcxx-ng=9.1.0=hdf63c60_0
-  - ncurses=6.1=he6710b0_1
-  - openssl=1.1.1c=h7b6447c_1
-  - pip=19.1.1=py37_0
-  - python=3.7.3=h0371630_0
-  - readline=7.0=h7b6447c_5
-  - setuptools=41.0.1=py37_0
-  - sqlite=3.28.0=h7b6447c_0
-  - tk=8.6.8=hbc83047_0
-  - wheel=0.33.4=py37_0
-  - xz=5.2.4=h14c3975_4
-  - zlib=1.2.11=h7b6447c_3
-  - pip:
-    - apache-libcloud==2.4.0
-    - applicationinsights==0.11.7
-    - asn1crypto==0.24.0
-    - brotli==1.0.7
-    - cffi==1.12.3
-    - chardet==3.0.4
-    - coverage==4.5.3
-    - cryptography==2.7
-    - defusedxml==0.6.0
-    - dj-database-url==0.5.0
-    - django==2.1.7
-    - django-cloud-browser==0.5.0
-    - django-filter==2.0.0
-    - django-heroku==0.3.1
-    - django-polymorphic==2.0.3
-    - django-rest-polymorphic==0.1.8
-    - django-webpack-loader==0.6.0
-    - django-widget-tweaks==1.4.2
-    - djangorestframework==3.8.2
-    - djangorestframework-csv==2.1.0
-    - djangorestframework-filters==0.10.2
-    - djangorestframework-xml==1.4.0
-    - environs==4.1.0
-    - faker==0.8.8
-    - flake8==3.6.0
-    - furl==2.0.0
-    - gunicorn==19.9.0
-    - idna==2.8
-    - lockfile==0.12.2
-    - marshmallow==2.19.5
-    - mccabe==0.6.1
-    - mixer==6.1.3
-    - model-mommy==1.6.0
-    - multidict==4.5.2
-    - numpy==1.16.4
-    - oauthlib==3.0.2
-    - orderedmultidict==1.0
-    - psycopg2==2.8.3
-    - psycopg2-binary==2.7.7
-    - pycodestyle==2.4.0
-    - pycparser==2.19
-    - pyflakes==2.0.0
-    - pyjwt==1.7.1
-    - python-dateutil==2.7.3
-    - python-dotenv==0.10.3
-    - python3-openid==3.1.0
-    - pytz==2018.4
-    - pyyaml==5.1.1
-    - requests==2.21.0
-    - requests-oauthlib==1.2.0
-    - seqeval==0.0.6
-    - six==1.11.0
-    - social-auth-app-django==3.1.0
-    - social-auth-core==3.0.0
-    - text-unidecode==1.2
-    - tornado==5.0.2
-    - unicodecsv==0.14.1
-    - unittest-xml-reporting==2.5.1
-    - urllib3==1.24.3
-    - vcrpy==2.0.1
-    - vcrpy-unittest==0.1.7
-    - whitenoise==4.1.2
-    - wrapt==1.11.2
-    - yarl==1.3.0
-