diff --git a/nwb-guide.spec b/nwb-guide.spec
index 9777f6913..f995ddae2 100644
--- a/nwb-guide.spec
+++ b/nwb-guide.spec
@@ -47,6 +47,8 @@ tmp_ret = collect_all('dlc2nwb')
 datas += tmp_ret[0]; binaries += tmp_ret[1]; hiddenimports += tmp_ret[2]
 tmp_ret = collect_all('ndx-pose')
 datas += tmp_ret[0]; binaries += tmp_ret[1]; hiddenimports += tmp_ret[2]
+tmp_ret = collect_all('tzdata')
+datas += tmp_ret[0]; binaries += tmp_ret[1]; hiddenimports += tmp_ret[2]
 
 block_cipher = None