diff --git a/mail/extensions/openpgp/content/modules/GPGMELib.jsm b/mail/extensions/openpgp/content/modules/GPGMELib.jsm
index f9dd6f8399f..05785289d32 100644
--- a/mail/extensions/openpgp/content/modules/GPGMELib.jsm
+++ b/mail/extensions/openpgp/content/modules/GPGMELib.jsm
@@ -18,7 +18,7 @@ var systemOS = Services.appinfo.OS.toLowerCase();
 var abi = ctypes.default_abi;
 
 // Default libary paths to look for on macOS
-const ADDITIONAL_LIB_PATHS = ["/usr/local/lib", "/opt/local/lib"];
+const ADDITIONAL_LIB_PATHS = ["/usr/local/lib", "/opt/local/lib", "/opt/homebrew/lib"];
 
 // Open libgpgme. Determine the path to the chrome directory and look for it
 // there first. If not, fallback to searching the standard locations.