diff --git a/stacks-signer/src/signerdb.rs b/stacks-signer/src/signerdb.rs
index b5195d68cf..f30c0124c1 100644
--- a/stacks-signer/src/signerdb.rs
+++ b/stacks-signer/src/signerdb.rs
@@ -856,7 +856,7 @@ impl SignerDb {
         // If we have no blocks known for this tenure, we will assume it has only JUST started and calculate
         // our tenure extend timestamp based on the epoch time in secs.
         let mut tenure_start_timestamp = None;
-        let mut tenure_process_time_ms = 0;
+        let mut tenure_process_time_ms = 0_u64;
         // Note that the globally accepted blocks are already returned in descending order of stacks height, therefore by newest block to oldest block
         for block_info in self
             .get_globally_accepted_blocks(consensus_hash)
@@ -865,7 +865,9 @@ impl SignerDb {
         {
             // Always use the oldest block as our tenure start timestamp
             tenure_start_timestamp = Some(block_info.proposed_time);
-            tenure_process_time_ms += block_info.validation_time_ms.unwrap_or(0);
+
+            tenure_process_time_ms =
+                tenure_process_time_ms.saturating_add(block_info.validation_time_ms.unwrap_or(0));
 
             if block_info
                 .block
diff --git a/stacks-signer/src/v0/signer.rs b/stacks-signer/src/v0/signer.rs
index 356f2cbedc..ea4a3d812d 100644
--- a/stacks-signer/src/v0/signer.rs
+++ b/stacks-signer/src/v0/signer.rs
@@ -18,6 +18,8 @@ use std::sync::mpsc::Sender;
 use std::time::{Duration, Instant};
 
 use blockstack_lib::chainstate::nakamoto::{NakamotoBlock, NakamotoBlockHeader};
+use blockstack_lib::chainstate::stacks::address::StacksAddressExtensions;
+use blockstack_lib::chainstate::stacks::TransactionPayload;
 use blockstack_lib::net::api::postblock_proposal::{
     BlockValidateOk, BlockValidateReject, BlockValidateResponse,
 };
@@ -587,7 +589,20 @@ impl Signer {
             block_info.signed_self.get_or_insert(get_epoch_time_secs());
         }
         // Record the block validation time
-        block_info.validation_time_ms = Some(block_validate_ok.validation_time_ms);
+        let non_bootcode_contract_call_block = block_info.block.txs.iter().any(|tx| {
+            // We only care about blocks that contain a non bootcode contract call
+            match &tx.payload {
+                TransactionPayload::ContractCall(cc) => !cc.address.is_boot_code_addr(),
+                TransactionPayload::SmartContract(..) => true,
+                _ => false,
+            }
+        });
+        if non_bootcode_contract_call_block {
+            block_info.validation_time_ms = Some(block_validate_ok.validation_time_ms);
+        } else {
+            // Ignore purely boot code and stx transfers when calculating the processing/validation time
+            block_info.validation_time_ms = Some(0);
+        }
 
         let signature = self
             .private_key