diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e9adfbf2c4..08b4b187d6e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@
 ### Under the hood
 - Add dependabot configuration for alerting maintainers about keeping dependencies up to date and secure. ([#3061](https://github.com/fishtown-analytics/dbt/issues/3061), [#3062](https://github.com/fishtown-analytics/dbt/pull/3062))
 - Update script to collect and write json schema for dbt artifacts ([#2870](https://github.com/fishtown-analytics/dbt/issues/2870), [#3065](https://github.com/fishtown-analytics/dbt/pull/3065))
+- Bump snowflake-connector-python and releated dependencies, support Python 3.9 ([#2985](https://github.com/fishtown-analytics/dbt/issues/2985), [#3148](https://github.com/fishtown-analytics/dbt/pull/3148))
 
 Contributors:
 - [@yu-iskw](https://github.com/yu-iskw) ([#2928](https://github.com/fishtown-analytics/dbt/pull/2928))
diff --git a/core/setup.py b/core/setup.py
index 5cfcc8be6fb..1b7e1de3763 100644
--- a/core/setup.py
+++ b/core/setup.py
@@ -75,9 +75,9 @@ def read(fname):
         'mashumaro==2.0',
         'typing-extensions>=3.7.4,<3.8',
         # the following are all to match snowflake-connector-python
-        'requests>=2.18.0,<2.24.0',
-        'idna<2.10',
-        'cffi>=1.9,<1.15',
+        'requests<3.0.0',
+        'idna>=2.5,<3',
+        'cffi>=1.9,<2.0.0',
     ],
     zip_safe=False,
     classifiers=[
diff --git a/plugins/redshift/setup.py b/plugins/redshift/setup.py
index 14d6229bf2f..276fff62751 100644
--- a/plugins/redshift/setup.py
+++ b/plugins/redshift/setup.py
@@ -48,8 +48,8 @@
     install_requires=[
         'dbt-core=={}'.format(package_version),
         'dbt-postgres=={}'.format(package_version),
-        # match snowflake-connector-python supported ranges
-        'boto3>=1.4.4,<1.16',
+        # the following are all to match snowflake-connector-python
+        'boto3>=1.4.4,<2.0.0',
     ],
     zip_safe=False,
     classifiers=[
diff --git a/plugins/snowflake/setup.py b/plugins/snowflake/setup.py
index 61aea3aa2a4..a7bd3232ec8 100644
--- a/plugins/snowflake/setup.py
+++ b/plugins/snowflake/setup.py
@@ -47,11 +47,8 @@
     },
     install_requires=[
         'dbt-core=={}'.format(package_version),
-        'snowflake-connector-python[secure-local-storage]==2.3.6',
-        'azure-common<2.0.0',
-        'azure-storage-blob>=12.0.0,<13.0.0',
-        'urllib3>=1.20,<1.26.0',
-        # this seems sufficiently broad
+        'snowflake-connector-python[secure-local-storage]~=2.4.1',
+        'requests<3.0.0',
         'cryptography>=3.2,<4',
     ],
     zip_safe=False,
@@ -67,6 +64,7 @@
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
     ],
     python_requires=">=3.6.2",
 )
diff --git a/setup.py b/setup.py
index 103c2fc68e6..74c22f3277a 100644
--- a/setup.py
+++ b/setup.py
@@ -61,6 +61,7 @@
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
     ],
     python_requires=">=3.6.2",
 )