diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 3d95c1921..06334621e 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -21,7 +21,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"
@@ -123,7 +122,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:
-          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index db5e5d6ce..ed486db93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@
 
 ### Removed
 
+- Support for Python 3.7 ([#853](https://github.com/stac-utils/pystac/pull/853))
+
 ### Changed
 
 ### Fixed
diff --git a/README.md b/README.md
index 07aa7291e..6c3bc7f87 100644
--- a/README.md
+++ b/README.md
@@ -11,10 +11,10 @@ PySTAC is a library for working with [SpatioTemporal Asset Catalog](https://stac
 
 ## Installation
 
-PySTAC requires Python >= 3.7. This project follows the recommendations of
+PySTAC requires Python >= 3.8. This project follows the recommendations of
 [NEP-29](https://numpy.org/neps/nep-0029-deprecation_policy.html) in deprecating support
-for Python versions. This means that users can expect support for Python 3.7 to be
-removed from the `main` branch after Dec 26, 2021 and therefore from the next release
+for Python versions. This means that users can expect support for Python 3.8 to be
+removed from the `main` branch after Apr 14, 2023 and therefore from the next release
 after that date.
 
 Note that while we support Python 3.10.\*, wheels for the `orjson` library are not always immediately available for all
diff --git a/pystac/summaries.py b/pystac/summaries.py
index f7850628c..c9718caf5 100644
--- a/pystac/summaries.py
+++ b/pystac/summaries.py
@@ -1,5 +1,4 @@
 from copy import deepcopy
-import sys
 import numbers
 from enum import Enum
 from functools import lru_cache
@@ -13,17 +12,13 @@
     Generic,
     List,
     Optional,
+    Protocol,
     Union,
     TypeVar,
     Iterable,
     TYPE_CHECKING,
 )
 
-if sys.version_info >= (3, 8):
-    from typing import Protocol
-else:
-    from typing_extensions import Protocol
-
 if TYPE_CHECKING:
     from pystac.item import Item as Item_Type
     from pystac.collection import Collection as Collection_Type
diff --git a/setup.py b/setup.py
index ca4065801..53af1bb4c 100644
--- a/setup.py
+++ b/setup.py
@@ -22,11 +22,8 @@
     packages=find_packages(exclude=["tests*"]),
     package_data={"": ["py.typed", "*.jinja2"]},
     py_modules=[splitext(basename(path))[0] for path in glob("pystac/*.py")],
-    python_requires=">=3.7",
-    install_requires=[
-        "python-dateutil>=2.7.0",
-        'typing_extensions >= 3.7; python_version < "3.8"',
-    ],
+    python_requires=">=3.8",
+    install_requires=["python-dateutil>=2.7.0"],
     extras_require={"validation": ["jsonschema>=3.0"], "orjson": ["orjson>=3.5"]},
     license="Apache Software License 2.0",
     license_files=["LICENSE"],
@@ -38,7 +35,6 @@
         "License :: OSI Approved :: Apache Software License",
         "Natural Language :: English",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",