diff --git a/tests/integration/test_boto.py b/tests/integration/test_boto.py
index ca6fb95..ed4a007 100644
--- a/tests/integration/test_boto.py
+++ b/tests/integration/test_boto.py
@@ -1,7 +1,10 @@
 import pytest
 boto = pytest.importorskip("boto")
+import boto
+import boto.iam
 from boto.s3.connection import S3Connection
 from boto.s3.key import Key
+from ConfigParser import DuplicateSectionError
 import vcr
 
 def test_boto_stubs(tmpdir):
@@ -9,6 +12,9 @@ def test_boto_stubs(tmpdir):
         # Perform the imports within the patched context so that
         # CertValidatingHTTPSConnection refers to the patched version.
         from boto.https_connection import CertValidatingHTTPSConnection
+        from vcr.stubs.boto_stubs import VCRCertValidatingHTTPSConnection
+        # Prove that the class was patched by the stub and that we can instantiate it.
+        assert CertValidatingHTTPSConnection is VCRCertValidatingHTTPSConnection
         CertValidatingHTTPSConnection('hostname.does.not.matter')
 
 def test_boto_without_vcr():
@@ -46,3 +52,21 @@ def test_boto_hardcore_mode(tmpdir):
         k = Key(s3_bucket)
         k.key = 'test.txt'
         k.set_contents_from_string('hello world i am a string')
+
+def test_boto_iam(tmpdir):
+    try:
+        boto.config.add_section('Boto')
+    except DuplicateSectionError:
+        pass
+    # Ensure that boto uses HTTPS
+    boto.config.set('Boto', 'is_secure', 'true')
+    # Ensure that boto uses CertValidatingHTTPSConnection
+    boto.config.set('Boto', 'https_validate_certificates', 'true')
+
+    with vcr.use_cassette(str(tmpdir.join('boto-iam.yml'))) as cass:
+        iam_conn = boto.iam.connect_to_region('universal')
+        iam_conn.get_all_users()
+
+    with vcr.use_cassette(str(tmpdir.join('boto-iam.yml'))) as cass:
+        iam_conn = boto.iam.connect_to_region('universal')
+        iam_conn.get_all_users()
diff --git a/vcr/patch.py b/vcr/patch.py
index ed4ffac..abfa311 100644
--- a/vcr/patch.py
+++ b/vcr/patch.py
@@ -33,6 +33,13 @@ try:
 except ImportError:  # pragma: no cover
     pass
 
+try:
+    # Try to save the original types for boto
+    import boto.https_connection
+    _CertValidatingHTTPSConnection = boto.https_connection.CertValidatingHTTPSConnection
+except ImportError:  # pragma: no cover
+    pass
+
 
 def install(cassette):
     """
@@ -86,6 +93,15 @@ def install(cassette):
     except ImportError:  # pragma: no cover
         pass
 
+    # patch boto
+    try:
+        import boto.https_connection as cpool
+        from .stubs.boto_stubs import VCRCertValidatingHTTPSConnection
+        cpool.CertValidatingHTTPSConnection = VCRCertValidatingHTTPSConnection
+        cpool.CertValidatingHTTPSConnection.cassette = cassette
+    except ImportError:  # pragma: no cover
+        pass
+
 
 def reset():
     '''Undo all the patching'''
@@ -120,3 +136,9 @@ def reset():
         cpool.SCHEME_TO_CONNECTION = _SCHEME_TO_CONNECTION
     except ImportError:  # pragma: no cover
         pass
+
+    try:
+        import boto.https_connection as cpool
+        cpool.CertValidatingHTTPSConnection = _CertValidatingHTTPSConnection
+    except ImportError:  # pragma: no cover
+        pass
diff --git a/vcr/stubs/boto_stubs.py b/vcr/stubs/boto_stubs.py
new file mode 100644
index 0000000..af0277a
--- /dev/null
+++ b/vcr/stubs/boto_stubs.py
@@ -0,0 +1,8 @@
+'''Stubs for boto'''
+
+from boto.https_connection import CertValidatingHTTPSConnection
+from ..stubs import VCRHTTPSConnection
+
+
+class VCRCertValidatingHTTPSConnection(VCRHTTPSConnection):
+    _baseclass = CertValidatingHTTPSConnection