diff --git a/Adafruit-Feather-M0-RFM95/longfi-us915/README.md b/Adafruit-Feather-M0-RFM95/longfi-us915/README.md
index 3423904..582c788 100644
--- a/Adafruit-Feather-M0-RFM95/longfi-us915/README.md
+++ b/Adafruit-Feather-M0-RFM95/longfi-us915/README.md
@@ -13,7 +13,7 @@ linux: /home/{user}/Arduino/libraries
 windows: Documents/Arduino/libraries
 mac os: Documents/Arduino/libraries 
 
-From the Arduino IDE, open the Library Manager (Sketch->Include Library->Manage Libraries). In the search box, type the library name below and install the latest version.
+From the Arduino IDE, open the Library Manager (Sketch->Include Library->Manage Libraries). In the search box, type the library name below and install version `1.5.0+arduino-2`.
 
 [IBM LMIC framework](https://github.com/matthijskooijman/arduino-lmic)  
 
diff --git a/Sparkfun-Pro-RF/longfi-us915/README.md b/Sparkfun-Pro-RF/longfi-us915/README.md
index 27b3995..72612f0 100644
--- a/Sparkfun-Pro-RF/longfi-us915/README.md
+++ b/Sparkfun-Pro-RF/longfi-us915/README.md
@@ -4,7 +4,7 @@ This example demonstrates sending a simple data packet using a Sparkfun Pro RF d
 
 ## Required Arduino Libraries
 
-From the Arduino IDE, open the Library Manager (Sketch->Include Library->Manage Libraries). In the search box, type the library name below and install the latest version.
+From the Arduino IDE, open the Library Manager (Sketch->Include Library->Manage Libraries). In the search box, type the library name below and install version `1.5.0+arduino-2`.
 
 [IBM LMIC framework](https://github.com/matthijskooijman/arduino-lmic)