diff --git a/rebar.config b/rebar.config
index 4ed7612..2013dea 100644
--- a/rebar.config
+++ b/rebar.config
@@ -6,7 +6,7 @@
 
 {deps, [ {eblake2, "1.0.0"}
        , {gmserialization, {git, "https://git.qpq.swiss/QPQ-AG/gmserialization.git",
-                            {ref, "9d2ecc00d32ea295309563e54a81636ecb597e96"}}}
+                            {tag, "v1.2.0"}}}
        , {getopt, "1.0.1"}
        ]}.
 
diff --git a/rebar.lock b/rebar.lock
index 3fc7485..695ef17 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -1,9 +1,5 @@
 {"1.2.0",
-[{<<"gmserialization">>,
-  {git,"https://git.qpq.swiss/QPQ-AG/gmserialization.git",
-       {ref,"9d2ecc00d32ea295309563e54a81636ecb597e96"}},
-  0},
- {<<"base58">>,
+[{<<"base58">>,
   {git,"https://git.qpq.swiss/QPQ-AG/erl-base58.git",
        {ref,"e6aa62eeae3d4388311401f06e4b939bf4e94b9c"}},
   1},
@@ -12,7 +8,11 @@
   {git,"https://git.qpq.swiss/QPQ-AG/enacl.git",
        {ref,"4eb7ec70084ba7c87b1af8797c4c4e90c84f95a2"}},
   1},
- {<<"getopt">>,{pkg,<<"getopt">>,<<"1.0.1">>},0}]}.
+ {<<"getopt">>,{pkg,<<"getopt">>,<<"1.0.1">>},0},
+ {<<"gmserialization">>,
+  {git,"https://git.qpq.swiss/QPQ-AG/gmserialization.git",
+       {ref,"ac64e01b0f675c1a34c70a827062f381920742db"}},
+  0}]}.
 [
 {pkg_hash,[
  {<<"eblake2">>, <<"EC8AD20E438AAB3F2E8D5D118C366A0754219195F8A0F536587440F8F9BCF2EF">>},