diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1f6645e0..22c4f26d 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -13,7 +13,6 @@ jobs:
     strategy:
       matrix:
         py:
-          - { version: "3.8", tox: "38" }
           - { version: "3.9", tox: "39" }
           - { version: "3.10", tox: "310" }
           - { version: "3.11", tox: "311" }
diff --git a/docs/contributing.md b/docs/contributing.md
index 0dfa1a64..171c2149 100644
--- a/docs/contributing.md
+++ b/docs/contributing.md
@@ -55,17 +55,17 @@ tox -e dev
 
 ### Running tests
 
-This project supports python versions 3.5 to 3.9. To run tests, use `tox`:
+This project supports python versions 3.9 to 3.13. To run tests, use `tox`:
 
 ```sh
 # List all tox environments
 tox -l
 
-# Run python3.8 exporter tests
-tox -e py38-ci-test-exporter
+# Run python3.12 exporter tests
+tox -e py312-ci-test-exporter
 
-# Run all python3.8 tests in parallel
-tox -f py38-test -pauto
+# Run all python3.12 tests in parallel
+tox -f py312-test -pauto
 
 # All checks that run in continuous integration use the "ci" factor, which
 # makes it easy to test without submitting a PR. To run all of them in
diff --git a/opentelemetry-exporter-gcp-logging/setup.cfg b/opentelemetry-exporter-gcp-logging/setup.cfg
index bdb67662..2f6e198d 100644
--- a/opentelemetry-exporter-gcp-logging/setup.cfg
+++ b/opentelemetry-exporter-gcp-logging/setup.cfg
@@ -14,14 +14,13 @@ classifiers =
     License :: OSI Approved :: Apache Software License
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
 
 [options]
-python_requires = >=3.8
+python_requires = >=3.9
 package_dir=
     =src
 packages=find_namespace:
diff --git a/opentelemetry-exporter-gcp-monitoring/setup.cfg b/opentelemetry-exporter-gcp-monitoring/setup.cfg
index e2ffde07..9f1886a0 100644
--- a/opentelemetry-exporter-gcp-monitoring/setup.cfg
+++ b/opentelemetry-exporter-gcp-monitoring/setup.cfg
@@ -14,7 +14,6 @@ classifiers =
     License :: OSI Approved :: Apache Software License
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -22,7 +21,7 @@ classifiers =
     Programming Language :: Python :: 3.13
 
 [options]
-python_requires = >=3.8
+python_requires = >=3.9
 package_dir=
     =src
 packages=find_namespace:
diff --git a/opentelemetry-exporter-gcp-trace/setup.cfg b/opentelemetry-exporter-gcp-trace/setup.cfg
index 353eefdb..c7340d49 100644
--- a/opentelemetry-exporter-gcp-trace/setup.cfg
+++ b/opentelemetry-exporter-gcp-trace/setup.cfg
@@ -14,7 +14,6 @@ classifiers =
     License :: OSI Approved :: Apache Software License
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -22,6 +21,7 @@ classifiers =
     Programming Language :: Python :: 3.13
 
 [options]
+python_requires = >=3.9
 package_dir=
     =src
 packages=find_namespace:
diff --git a/opentelemetry-propagator-gcp/setup.cfg b/opentelemetry-propagator-gcp/setup.cfg
index a345cb56..802f8674 100644
--- a/opentelemetry-propagator-gcp/setup.cfg
+++ b/opentelemetry-propagator-gcp/setup.cfg
@@ -14,7 +14,6 @@ classifiers =
     License :: OSI Approved :: Apache Software License
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -22,7 +21,7 @@ classifiers =
     Programming Language :: Python :: 3.13
 
 [options]
-python_requires = >=3.8
+python_requires = >=3.9
 package_dir=
     =src
 packages=find_namespace:
diff --git a/opentelemetry-resourcedetector-gcp/setup.cfg b/opentelemetry-resourcedetector-gcp/setup.cfg
index 4fcc437b..47be499c 100644
--- a/opentelemetry-resourcedetector-gcp/setup.cfg
+++ b/opentelemetry-resourcedetector-gcp/setup.cfg
@@ -14,7 +14,6 @@ classifiers =
     License :: OSI Approved :: Apache Software License
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -22,7 +21,7 @@ classifiers =
     Programming Language :: Python :: 3.13
 
 [options]
-python_requires = >=3.8
+python_requires = >=3.9
 package_dir=
     =src
 packages=find_namespace:
diff --git a/tox.ini b/tox.ini
index 0b617253..e7e7a4eb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ requires =
   tox>=4
 envlist =
   ; Add the `ci` factor to any env that should be running during CI.
-  py3{8,9,10,11,12,13}-ci-test-{cloudtrace,cloudmonitoring,propagator,resourcedetector, cloudlogging}
+  py3{9,10,11,12,13}-ci-test-{cloudtrace,cloudmonitoring,propagator,resourcedetector, cloudlogging}
   {lint,mypy}-ci-{cloudtrace,cloudmonitoring,propagator,resourcedetector, cloudlogging}
   docs-ci
 
@@ -60,7 +60,7 @@ setenv =
   propagator: PACKAGE_NAME = opentelemetry-propagator-gcp
   resourcedetector: PACKAGE_NAME = opentelemetry-resourcedetector-gcp
 
-[testenv:py3{8,9,10,11,12,13}-ci-test-{cloudtrace,cloudmonitoring,propagator,resourcedetector, cloudlogging}]
+[testenv:py3{9,10,11,12,13}-ci-test-{cloudtrace,cloudmonitoring,propagator,resourcedetector, cloudlogging}]
 deps =
   ; editable install the package itself
   -e {toxinidir}/{env:PACKAGE_NAME}