diff --git a/docs/ProcessRegistry.md b/docs/ProcessRegistry.md
index 891f78a..6e88478 100644
--- a/docs/ProcessRegistry.md
+++ b/docs/ProcessRegistry.md
@@ -299,7 +299,7 @@ Submits a state transition with zero-knowledge proof.
 
 - Updates latest state root
 - Increments vote counts
-- Emits `ProcessStateRootUpdated`
+- Emits `ProcessStateTransitioned`
 
 #### setProcessResults
 
@@ -409,13 +409,16 @@ event ProcessDurationChanged(bytes32 indexed processId, uint256 duration)
 
 Emitted when process duration is modified.
 
-### ProcessStateRootUpdated
+### ProcessStateTransitioned
 
 ```solidity
-event ProcessStateRootUpdated(
+event ProcessStateTransitioned(
     bytes32 indexed processId,
     address indexed sender,
-    uint256 newStateRoot
+    uint256 oldStateRoot,
+    uint256 newStateRoot,
+    uint256 newVotersCount,
+    uint256 newOverwrittenVotesCount
 )
 ```
 
diff --git a/src/ProcessRegistry.sol b/src/ProcessRegistry.sol
index 860d10e..2d0c260 100644
--- a/src/ProcessRegistry.sol
+++ b/src/ProcessRegistry.sol
@@ -303,7 +303,14 @@ contract ProcessRegistry is IProcessRegistry {
         p.overwrittenVotesCount += st.overwrittenVotesCount;
         ++p.batchNumber;
 
-        emit ProcessStateRootUpdated(processId, msg.sender, st.rootHashAfter);
+        emit ProcessStateTransitioned(
+            processId,
+            msg.sender,
+            st.rootHashBefore,
+            st.rootHashAfter,
+            p.votersCount,
+            p.overwrittenVotesCount
+        );
     }
 
     /// @inheritdoc IProcessRegistry
diff --git a/src/interfaces/IProcessRegistry.sol b/src/interfaces/IProcessRegistry.sol
index 135f663..9defaec 100644
--- a/src/interfaces/IProcessRegistry.sol
+++ b/src/interfaces/IProcessRegistry.sol
@@ -34,7 +34,15 @@ interface IProcessRegistry {
      * @param sender The address of the sender.
      * @param newStateRoot The new state root of the process.
      */
-    event ProcessStateRootUpdated(bytes32 indexed processId, address indexed sender, uint256 newStateRoot);
+    event ProcessStateTransitioned(
+        bytes32 indexed processId,
+        address indexed sender,
+        uint256 oldStateRoot,
+        uint256 newStateRoot,
+        uint256 newVotersCount,
+        uint256 newOverwrittenVotesCount
+    );
+
     /*
      * @notice Emitted when the results of a process are set.
      * @param processId The ID of the process.
diff --git a/test/ProcessRegistry.t.sol b/test/ProcessRegistry.t.sol
index 8b4e034..a56e643 100644
--- a/test/ProcessRegistry.t.sol
+++ b/test/ProcessRegistry.t.sol
@@ -1017,8 +1017,8 @@ contract ProcessRegistryTest is Test, TestHelpers {
         vm.mockCall(KZG_PRECOMPILE, "", abi.encode(FIELD_ELEMENTS_PER_BLOB, BLS_MODULUS));
 
         // Submit state transition
-        emit IProcessRegistry.ProcessStateRootUpdated(processId, address(this), ROOT_HASH_BEFORE);
-        processRegistry.submitStateTransition(processId, STATETRANSITION_ABI_PROOF, stateTransitionInputs());
+        emit IProcessRegistry.ProcessStateTransitioned(processId, address(this), ROOT_HASH_AFTER);
+        processRegistry.submitStateTransition(processId, stateTransitionZKProof, stateTransitionInputs());
 
         // Verify state after transition
         process = processRegistry.getProcess(processId);