diff --git a/Lib/test/test_xdrlib.py b/Lib/test/test_xdrlib.py
index ab6e460..9ba8885 100644
--- a/Lib/test/test_xdrlib.py
+++ b/Lib/test/test_xdrlib.py
@@ -12,6 +12,7 @@
         a = ['what', 'is', 'hapnin', 'doctor']
 
         p.pack_int(42)
+        p.pack_int(-17)
         p.pack_uint(9)
         p.pack_bool(True)
         p.pack_bool(False)
@@ -29,6 +30,7 @@
         self.assertEqual(up.get_position(), 0)
 
         self.assertEqual(up.unpack_int(), 42)
+        self.assertEqual(up.unpack_int(), -17)
         self.assertEqual(up.unpack_uint(), 9)
         self.assertTrue(up.unpack_bool() is True)
 
diff --git a/Lib/xdrlib.py b/Lib/xdrlib.py
index 796dfaf..ef172dd 100644
--- a/Lib/xdrlib.py
+++ b/Lib/xdrlib.py
@@ -53,7 +53,9 @@
     def pack_uint(self, x):
         self.__buf.write(struct.pack('>L', x))
 
-    pack_int = pack_uint
+    def pack_int(self, x):
+        self.__buf.write(struct.pack('>l', x))
+
     pack_enum = pack_int
 
     def pack_bool(self, x):
diff --git a/Misc/ACKS b/Misc/ACKS
index 66ace9a..c2bcde2 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -306,6 +306,7 @@
 Duncan Grisby
 Fabian Groffen
 Dag Gruneau
+Filip Gruszczyński
 Michael Guravage
 Lars Gustäbel
 Thomas Güttler
diff --git a/Misc/NEWS b/Misc/NEWS
index 3eb910c..fcd7b63 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -47,6 +47,9 @@
 Library
 -------
 
+- Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when
+  trying to pack a negative (in-range) integer.
+
 - Issue #11675: multiprocessing.[Raw]Array objects created from an integer size
   are now zeroed on creation.  This matches the behaviour specified by the
   documentation.