diff --git a/.gitignore b/.gitignore
index fcb883a7..f22a62d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,7 +3,7 @@ test/eng_archive
 test/*.tar.gz
 test/regr_vals.*
 build
-data
+/data*
 dist
 doc/_build
 www
@@ -21,3 +21,6 @@ dev_utils/event_filter_1.png
 dev_utils/event_filter_2.png
 dev_utils/l0_5icd.pdf
 dev_utils/memleak.py
+*.ipynb
+.ipynb_checkpoints
+.idea
diff --git a/Ska/engarchive/tests/test_sync.py b/Ska/engarchive/tests/test_sync.py
index baa61c10..80e8ea57 100644
--- a/Ska/engarchive/tests/test_sync.py
+++ b/Ska/engarchive/tests/test_sync.py
@@ -1,3 +1,4 @@
+import sys
 import os
 import pickle
 import shutil
@@ -13,6 +14,8 @@
 from .. import update_client_archive, update_server_sync
 from ..utils import STATS_DT, set_fetch_basedir
 
+pytestmark = pytest.mark.skipif(sys.maxsize <= 2 ** 32, reason="tests for 64-bit only")
+
 # Covers safe mode and IRU swap activities around 2018:283.  This is a time
 # with rarely-seen telemetry.
 START, STOP = '2018:281', '2018:293'
diff --git a/Ska/engarchive/version.py b/Ska/engarchive/version.py
index 92cad170..a2bff3d7 100644
--- a/Ska/engarchive/version.py
+++ b/Ska/engarchive/version.py
@@ -34,7 +34,7 @@
 # SET THESE VALUES
 ############################
 # Major, Minor, Bugfix, Dev
-VERSION = (4, 45, None, False)
+VERSION = (4, 45, 1, False)
 
 
 class SemanticVersion(object):