diff --git a/setup.py b/setup.py
index 71027c7ae..bcfdf2716 100644
--- a/setup.py
+++ b/setup.py
@@ -21,9 +21,9 @@
     "aioice>=0.7.5,<0.8.0",
     "av>=8.0.0,<9.0.0",
     "cffi>=1.0.0",
-    "crc32c>=2.1",
     "cryptography>=2.2",
     'dataclasses; python_version < "3.7"',
+    "google-crc32c>=1.1",
     "pyee>=6.0.0",
     "pylibsrtp>=0.5.6",
 ]
diff --git a/src/aiortc/rtcsctptransport.py b/src/aiortc/rtcsctptransport.py
index dc0033fc1..e4a638b91 100644
--- a/src/aiortc/rtcsctptransport.py
+++ b/src/aiortc/rtcsctptransport.py
@@ -22,7 +22,12 @@
     no_type_check,
 )
 
-from crc32c import crc32c
+# The `crc32c` package offers better performance but uses an LGPL license,
+# so we use `google-crc32c` by default.
+try:
+    from crc32c import crc32c
+except ImportError:
+    from google_crc32c import value as crc32c
 from pyee import AsyncIOEventEmitter
 
 from .exceptions import InvalidStateError
diff --git a/stubs/google_crc32c.pyi b/stubs/google_crc32c.pyi
new file mode 100644
index 000000000..1366f064e
--- /dev/null
+++ b/stubs/google_crc32c.pyi
@@ -0,0 +1 @@
+def value(data: bytes) -> int: ...