diff --git a/src/AdafruitIO_Definitions.h b/src/AdafruitIO_Definitions.h
index baa6cc6..edf9afa 100644
--- a/src/AdafruitIO_Definitions.h
+++ b/src/AdafruitIO_Definitions.h
@@ -119,7 +119,7 @@ class AdafruitIOGroupCallback {
 // echo | openssl s_client -connect io.adafruit.com:443 | openssl x509
 // -fingerprint -noout
 #define AIO_SSL_FINGERPRINT                                                    \
-  "18 C0 C2 3D BE DD 81 37 73 40 E7 E4 36 61 CB 0A DF 96 AD 25" ///< Latest
+  "4E C1 52 73 24 A8 36 D6 7A 4C 67 C7 91 0C 0A 22 B9 2D 5B CA" ///< Latest
                                                                 ///< Adafruit IO
                                                                 ///< SSL
                                                                 ///< Fingerprint
@@ -166,4 +166,4 @@ typedef enum {
 
 } aio_time_format_t;
 
-#endif /* ADAFRUITIO_DEFINITIONS_H_ */
\ No newline at end of file
+#endif /* ADAFRUITIO_DEFINITIONS_H_ */