diff --git a/.mailmap b/.mailmap
index 5340dd2dcc..7e715a013c 100644
--- a/.mailmap
+++ b/.mailmap
@@ -1,3 +1,4 @@
+Alexey Frolov <alexey.frolov@aetsoft.by> <a.frolov@aetsoft.by>
 Alfredo Garcia <oxarbitrage@gmail.com> <oxarbitrage@gmail.com>
 Alfredo Garcia <oxarbitrage@gmail.com> <root@NC-PH-1346-07.web-hosting.com>
 Anonymous <you@example.com>
diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index e0f59120ed..6a0a654748 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -78,4 +78,5 @@ bitcube <root@seed.cubeconnex.com>
 lafona <lafona@protonmail.com>
 liondani <liondani@gmx.com>
 lososeg <ya.lososeg@gmail.com>
+sinetek <pitwuu@gmail.com>
 xiao93 <42384581+xiao93@users.noreply.github.com>
diff --git a/libraries/fc b/libraries/fc
index 4a4ee77513..72437c07ae 160000
--- a/libraries/fc
+++ b/libraries/fc
@@ -1 +1 @@
-Subproject commit 4a4ee7751331def99ce1ff58b9f007c1ae86a072
+Subproject commit 72437c07ae8179b26374ef14847495f7769caa95