diff --git a/CHANGES b/CHANGES
index 67feec3..2f7d9b7 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,10 @@
 CHANGES
 -------
 
+# v0.6.34
+
+- fixed timestamps being parsed incorrectly
+
 # v0.6.33
 
 - added ambiguity parsing for normal position reports
diff --git a/aprslib/__init__.py b/aprslib/__init__.py
index b3b9dfb..a8d1db3 100644
--- a/aprslib/__init__.py
+++ b/aprslib/__init__.py
@@ -37,7 +37,7 @@ from datetime import date as _date
 __date__ = str(_date.today())
 del _date
 
-__version__ = "0.6.33"
+__version__ = "0.6.34"
 __author__ = "Rossen Georgiev"
 __all__ = ['IS', 'parse', 'passcode']
 
diff --git a/aprslib/parse.py b/aprslib/parse.py
index f55445a..44bb31f 100644
--- a/aprslib/parse.py
+++ b/aprslib/parse.py
@@ -316,11 +316,11 @@ def _parse_timestamp(body, packet_type=''):
             try:
                 # zulu hhmmss format
                 if form == 'h':
-                    timestamp = "%s%s%s%s" % (utc.year, utc.month, utc.day, ts)
+                    timestamp = "%d%02d02d%s" % (utc.year, utc.month, utc.day, ts)
                 # zulu ddhhmm format
                 # '/' local ddhhmm format
                 elif form in 'z/':
-                    timestamp = "%s%s%s%s" % (utc.year, utc.month, ts, utc.second)
+                    timestamp = "%d%02d%s%02d" % (utc.year, utc.month, ts, utc.second)
 
                 timestamp = utc.strptime(timestamp, "%Y%m%d%H%M%S")
                 timestamp = time.mktime(timestamp.timetuple())