1 file changed, 3 insertions, 2 deletions
diff --git a/custom/extensions/email-libravatar.lua b/custom/extensions/email-libravatar.lua
index 719be2e..e04c2c2 100644
--- a/custom/extensions/email-libravatar.lua
+++ b/custom/extensions/email-libravatar.lua
@@ -28,7 +28,8 @@
 --
 -- Every page view sends the visitor's IP address and a hash of each
 -- committer's email to a third-party service, so leave this filter off if
--- that is not acceptable for your instance. Addresses are hashed with MD5.
+-- that is not acceptable for your instance. Addresses are hashed with
+-- SHA-256, which Libravatar accepts alongside MD5.
 
 local has_digest, digest = pcall(require, "openssl.digest")
 
@@ -48,7 +49,7 @@ local buffer = ""
 local avatar_hash = nil
 
 local function hash_hex(input)
-	local raw = digest.new("md5"):final(input)
+	local raw = digest.new("sha256"):final(input)
 	local hex = ""
 	for i = 1, #raw do
 		hex = hex .. string.format("%.2x", string.byte(raw, i))