diff --git a/app/main.py b/app/main.py
index 85e0259..52bc1cd 100644
--- a/app/main.py
+++ b/app/main.py
@@ -3,6 +3,7 @@
 """Get 6to4 address from IPv4 address."""
 
 import argparse
+import sentry_sdk
 
 
 def parse_args():  # pragma: no cover
@@ -52,6 +53,9 @@ def ipv4_to_ipv6(ipv4):
 
 def main():  # pragma: no cover
     """Main function."""
+
+    sentry_sdk.init("https://14fab091f12c45d299569dcefd1bd716@app.glitchtip.com/1704")
+
     ipv4 = parse_args().address
     output = ipv4_to_ipv6(ipv4)
     print(output)
diff --git a/requirements.txt b/requirements.txt
index e69de29..1d339b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -0,0 +1 @@
+sentry-sdk