diff --git a/.changes/unreleased/Under the Hood-20230530-161341.yaml b/.changes/unreleased/Under the Hood-20230530-161341.yaml
new file mode 100644
index 000000000..31acaf121
--- /dev/null
+++ b/.changes/unreleased/Under the Hood-20230530-161341.yaml	
@@ -0,0 +1,6 @@
+kind: Under the Hood
+body: remove support for python 3.7
+time: 2023-05-30T16:13:41.217839-05:00
+custom:
+  Author: McKnight-42
+  Issue: "638"
diff --git a/.github/scripts/integration-test-matrix.js b/.github/scripts/integration-test-matrix.js
index 75e6c50d9..a8fadc95a 100644
--- a/.github/scripts/integration-test-matrix.js
+++ b/.github/scripts/integration-test-matrix.js
@@ -1,6 +1,6 @@
 module.exports = ({ context }) => {
   const defaultPythonVersion = "3.8";
-  const supportedPythonVersions = ["3.7", "3.8", "3.9"];
+  const supportedPythonVersions = ["3.8", "3.9"];
   const supportedAdapters = ["snowflake"];
 
   // if PR, generate matrix based on files changed and PR labels
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 93e1c1108..a66b3ef9c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -72,7 +72,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.7, 3.8] # TODO: support unit testing for python 3.9 (https://github.com/dbt-labs/dbt/issues/3689)
+        python-version: [3.8, 3.9]
 
     env:
       TOXENV: "unit"
@@ -169,7 +169,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.7, 3.8, 3.9]
+        python-version: [3.8, 3.9]
 
     steps:
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/CONTRIBUTING.MD b/CONTRIBUTING.MD
index fdfd78132..faf428ad3 100644
--- a/CONTRIBUTING.MD
+++ b/CONTRIBUTING.MD
@@ -79,7 +79,7 @@ WARNING: The parameters in your `test.env` file must link to a valid Snowflake a
 There are a few methods for running tests locally.
 
 #### `tox`
-`tox` automatically runs unit tests against several Python versions using its own virtualenvs. Run `tox -p` to run unit tests for Python 3.7, Python 3.8, Python 3.9, and `flake8` in parallel. Run `tox -e py37` to invoke tests on Python version 3.7 only (use py37, py38, or py39). Tox recipes are found in `tox.ini`.
+`tox` automatically runs unit tests against several Python versions using its own virtualenvs. Run `tox -p` to run unit tests for Python 3.8, Python 3.9, and `flake8` in parallel. Run `tox -e py38` to invoke tests on Python version 3.8 only (use py38, or py39). Tox recipes are found in `tox.ini`.
 
 #### `pytest`
 You may run a specific test or group of tests using `pytest` directly. Activate a Python virtualenv active with dev dependencies installed. Then, run tests like so:
diff --git a/setup.py b/setup.py
index c6fbace2d..1421d41df 100644
--- a/setup.py
+++ b/setup.py
@@ -3,10 +3,10 @@
 import sys
 import re
 
-# require python 3.7 or newer
-if sys.version_info < (3, 7):
+# require python 3.8 or newer
+if sys.version_info < (3, 8):
     print("Error: dbt does not support this version of Python.")
-    print("Please upgrade to Python 3.7 or higher.")
+    print("Please upgrade to Python 3.8 or higher.")
     sys.exit(1)
 
 
@@ -76,9 +76,8 @@ def _get_dbt_core_version():
         "Operating System :: Microsoft :: Windows",
         "Operating System :: MacOS :: MacOS X",
         "Operating System :: POSIX :: Linux",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
     ],
-    python_requires=">=3.7",
+    python_requires=">=3.8",
 )
diff --git a/tox.ini b/tox.ini
index 07c7436a9..5c6ae7041 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 skipsdist = True
-envlist = py37,py38,py39
+envlist = py38,py39
 
 [testenv:{unit,py37,py38,py39,py}]
 description = unit testing
@@ -13,7 +13,7 @@ deps =
   -rdev-requirements.txt
   -e.
 
-[testenv:{integration,py37,py38,py39,py}-{snowflake}]
+[testenv:{integration,py38,py39,py}-{snowflake}]
 description = adapter plugin integration testing
 skip_install = true
 passenv =