diff --git a/main.py b/main.py
index 12a2c5c..7804652 100644
--- a/main.py
+++ b/main.py
@@ -18,6 +18,11 @@ def get_debian_dt(trace_file_url):
     time_str = response_text.split('\n')[0]
     return datetime.strptime(time_str, "%a %b %d %H:%M:%S UTC %Y")
 
+def get_openbsd_sec(timestamp_file_url):
+    """Get OpenBSD seconds since the Epoch from timestamp file"""
+    sec_str = requests.get(timestamp_file_url).text
+    return int(sec_str)
+
 if __name__ == "__main__":
     # Arch
     try:
@@ -44,3 +49,13 @@ if __name__ == "__main__":
         print(OUTPUT.format("Debian"))
     except requests.exceptions.RequestException as err:
         print(ERROR.format("Debian", err))
+
+    # OpenBSD
+    try:
+        official_sec = get_openbsd_sec("https://ftp.openbsd.org/pub/OpenBSD/timestamp")
+        csc_sec = get_openbsd_sec(f"{CSC_MIRROR}OpenBSD/timestamp")
+        # Out-of-sync by 1 day maximum
+        OUTPUT = SUCCESS if official_sec < csc_sec + 86400 else FAILURE
+        print(OUTPUT.format("OpenBSD"))
+    except requests.exceptions.RequestException as err:
+        print(ERROR.format("OpenBSD", err))