diff --git a/CHANGELOG.md b/CHANGELOG.md
index ab1048e..974d88c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,7 +20,7 @@
 
 # Unreleased
 
-*
+* Fix the build for PyPy2 ([#116](https://github.com/closeio/ciso8601/pull/116))
 
 # 2.x.x
 
diff --git a/module.c b/module.c
index eef85d4..0ce53f1 100644
--- a/module.c
+++ b/module.c
@@ -17,7 +17,7 @@
 // https://foss.heptapod.net/pypy/pypy/-/merge_requests/826
 #ifdef PYPY_VERSION
     #define SUPPORTS_37_TIMEZONE_API \
-            (PYPY_VERSION_NUM >= 0x07030600)
+            (PYPY_VERSION_NUM >= 0x07030600) && PY_VERSION_AT_LEAST_37
 #else
     #define SUPPORTS_37_TIMEZONE_API \
             PY_VERSION_AT_LEAST_37
diff --git a/tests/tests.py b/tests/tests.py
index d1ce2e1..bba8c4c 100644
--- a/tests/tests.py
+++ b/tests/tests.py
@@ -62,8 +62,9 @@ def test_returns_built_in_utc_if_available(self):
         # PyPy added support for it in 7.3.6
 
         timestamp = '2018-01-01T00:00:00.00Z'
-        if (platform.python_implementation() == 'CPython' and sys.version_info >= (3, 7)) or \
-           (platform.python_implementation() == 'PyPy' and sys.pypy_version_info >= (7, 3, 6)):
+        if sys.version_info >= (3, 7) and \
+            (platform.python_implementation() == 'CPython'
+             or (platform.python_implementation() == 'PyPy' and sys.pypy_version_info >= (7, 3, 6))):
             self.assertIs(parse_datetime(timestamp).tzinfo, datetime.timezone.utc)
         else:
             self.assertIsInstance(parse_datetime(timestamp).tzinfo, FixedOffset)