diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 20b4683..83c4bdd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -23,21 +23,19 @@ jobs:
       matrix:
         include:
           - arch: amd64
-            toxenv: py36,py37,py38,py39,py310,py311,py312,py313,py314,black,mypy
+            toxenv: py36,py39,py310,py311,py312,py313,py314,black,mypy
           - arch: arm64
             toxenv: py36
           - arch: arm64
-            toxenv: py37
-          - arch: arm64
-            toxenv: py38,py39
+            toxenv: py39
           - arch: arm64
             toxenv: py310,py311
           - arch: ppc64le
-            toxenv: py36,py37,py38
+            toxenv: py36
           - arch: ppc64le
             toxenv: py39,py310,py311
           - arch: s390x
-            toxenv: py36,py37,py38,py39,py310,py311
+            toxenv: py36,py39,py310,py311
 
     # Use GitHub's Linux Docker host
     runs-on: ubuntu-latest
diff --git a/tox.ini b/tox.ini
index 4992775..674aadd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = black,mypy,py{36,37,38,39,310,311,312,313,314}
+envlist = black,mypy,py{36,39,310,311,312,313,314}
 isolated_build = True
 
 [testenv]