diff --git a/docs/node/precompiles/staking.md b/docs/node/precompiles/staking.md
index 08daf76..65cbc01 100644
--- a/docs/node/precompiles/staking.md
+++ b/docs/node/precompiles/staking.md
@@ -97,6 +97,12 @@ interface Staking {
         address _validator
     ) external view returns (uint256 count);
 
+    /**
+        @dev Get total signed blocks count by all validators.
+        @return The amount of blocks signed by all validators.
+    */
+    function totalSignedBlocks() external view returns (uint256 count);
+
     /**
         @dev Get commission of validator.
         @param _validator The address of the target validator.