diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 250a705c6..19aab82fb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -38,7 +38,7 @@ jobs:
       max-parallel: 4
       matrix:
         platform: [ubuntu-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9]
     env:
       PLATFORM: ${{ matrix.platform }}
     steps:
diff --git a/conda/ci_build.sh b/conda/ci_build.sh
index e63f40c2b..b1f7e69ed 100755
--- a/conda/ci_build.sh
+++ b/conda/ci_build.sh
@@ -16,7 +16,6 @@ conda update -q conda
 conda info -a
 conda install conda-build anaconda-client
 
-conda build conda --python 3.6
 conda build conda --python 3.7
 conda build conda --python 3.8
 conda build conda --python 3.9
diff --git a/setup.py b/setup.py
index 90eb194d9..b7e07971a 100644
--- a/setup.py
+++ b/setup.py
@@ -50,6 +50,7 @@
     packages=packages,
     package_dir={"": "src"},
     include_package_data=True,
+    python_requires=">=3.7",
     entry_points={
         "console_scripts": [
             "orion = orion.core.cli:main",
@@ -80,7 +81,6 @@
     },
     install_requires=[
         "cloudpickle",
-        "dataclasses;python_version<'3.7'",
         "PyYAML",
         "pymongo>=3",
         "numpy",
@@ -129,7 +129,7 @@
     "Programming Language :: Python",
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Artificial Intelligence",
-] + [("Programming Language :: Python :: %s" % x) for x in "3 3.6 3.7 3.8 3.9".split()]
+] + [("Programming Language :: Python :: %s" % x) for x in "3 3.7 3.8 3.9".split()]
 
 if __name__ == "__main__":
     setup(**setup_args)
diff --git a/tox.ini b/tox.ini
index 75a9b9302..b23bc7ef7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py{36,37,38,39}-{linux,macos}{,-all}
+envlist = py{37,38,39}-{linux,macos}{,-all}
 
 #########################################################
 # Tox environments
@@ -7,7 +7,6 @@ envlist = py{36,37,38,39}-{linux,macos}{,-all}
 
 [gh-actions]
 python =
-    3.6: py36
     3.7: py37
     3.8: py38
     3.9: py39