diff --git a/src/gmser_chain_objects.erl b/src/gmser_chain_objects.erl
index 7ad2f7c..465db2d 100644
--- a/src/gmser_chain_objects.erl
+++ b/src/gmser_chain_objects.erl
@@ -101,7 +101,6 @@ tag(ac_update_cops_tx) -> 95;
 tag(ac_rollup_tx) -> 96;
 tag(ac_proposal_tx) -> 97;
 tag(ac_receipt) -> 98;
-tag(key_block) -> 100;
 tag(micro_block) -> 101;
 tag(light_micro_block) -> 102;
 tag(testimony) -> 110;
@@ -190,7 +189,6 @@ rev_tag(95)  -> ac_update_cops_tx;
 rev_tag(96)  -> ac_rollup_tx;
 rev_tag(97)  -> ac_proposal_tx;
 rev_tag(98)  -> ac_receipt;
-rev_tag(100) -> key_block;
 rev_tag(101) -> micro_block;
 rev_tag(102) -> light_micro_block;
 rev_tag(110) -> testimony;