diff --git a/Cargo.toml b/Cargo.toml
index 21e65da..60b2018 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,6 @@ name = "lightningcss"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.28.2", features = ["extension-module"] }
+pyo3 = { version = "0.28.2", features = ["extension-module", "abi3-py37"] }
 browserslist-rs = "0.19.0"
 lightningcss = { version = "1.0.0-alpha.71", features = ["browserslist"] }
diff --git a/pyproject.toml b/pyproject.toml
index ad0a8a5..adbe506 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,14 +22,6 @@ classifiers = [
     "Programming Language :: Python :: Implementation :: PyPy",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.7",
-    "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",
-    "Programming Language :: Python :: 3.13",
-    "Programming Language :: Python :: 3.14",
     "Topic :: Internet :: WWW/HTTP",
     "Topic :: Software Development :: Pre-processors",
 ]