diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1306b20..8551beb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 - client: Ignore messages other than UTF-8
+- parser: Allow IDs only with hexadecimal values
 
 ## 0.8.0 - 2017-10-02
 - parser: Merged function 'parse_aprs' and 'parse_ogn_beacon' to 'parse'
diff --git a/ogn/parser/pattern.py b/ogn/parser/pattern.py
index 49a9c6c..ea36114 100644
--- a/ogn/parser/pattern.py
+++ b/ogn/parser/pattern.py
@@ -11,7 +11,7 @@ PATTERN_NAVITER_BEACON = re.compile("""
 """, re.VERBOSE | re.MULTILINE)
 
 PATTERN_TRACKER_BEACON_POSITION = re.compile("""
-    id(?P<details>[0-9A-F]{2})(?P<id>[0-9A-F]{6}?)\s?
+    id(?P<details>[\dA-F]{2})(?P<id>[\dA-F]{6}?)\s?
     (?:(?P<climb_rate>[+-]\d+?)fpm\s)?
     (?:(?P<turn_rate>[+-][\d.]+?)rot\s)?
     (?:FL(?P<flight_level>[\d.]+)\s)?
@@ -114,7 +114,7 @@ PATTERN_RECEIVER_BEACON = re.compile(r"""
 
 
 PATTERN_AIRCRAFT_BEACON = re.compile(r"""
-    id(?P<details>[0-9A-F]{2})(?P<id>[0-9A-F]{6}?)\s?
+    id(?P<details>[\dA-F]{2})(?P<id>[\dA-F]{6}?)\s?
     (?:(?P<climb_rate>[+-]\d+?)fpm\s)?
     (?:(?P<turn_rate>[+-][\d.]+?)rot\s)?
     (?:FL(?P<flight_level>[\d.]+)\s)?