diff --git a/.gitignore b/.gitignore
index fa7ebaa..91fd97e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /build
 *.elf
 *.wps
+certs/
diff --git a/data/ca.pem b/data/ca.pem
index 9d6f948..1f05e69 100644
--- a/data/ca.pem
+++ b/data/ca.pem
@@ -1,3 +1,4 @@
+# PKCA - exp 2051-10-03
 -----BEGIN CERTIFICATE-----
 MIIDaTCCAlGgAwIBAgIQWWi/WdPuVr1BiNarQaD06TANBgkqhkiG9w0BAQsFADBG
 MQwwCgYDVQQLEwNQS0kxEzARBgNVBAoTCkthZXJ1IFRlYW0xCzAJBgNVBAYTAkdC
@@ -18,4 +19,100 @@ yLgJP590tqfsAfP1IfIhwunIUACL1FnQnwxkJPIGjG2NGoQYy9/33geG2Ajn3gXk
 ONTsCq4BU3gt/dbItSN8010lFx4sbG366DP0/MtYjeHEFlX+hlUDwtIoCV8zqKVz
 wOgPI/hg6ZO0IR8Ifa65d12gxpKy+xMfiwLhNZQsR62h2hr1iCuaGtoTiXQvM/9S
 v3bMEooCcYmxZkoxqA==
------END CERTIFICATE-----
\ No newline at end of file
+-----END CERTIFICATE-----
+# GTS Root R1 - exp 2036-06-22
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+# GTS Root R2 - exp 2036-06-22
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+# ISRG Root X1 - exp 2035-06-04
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----