diff --git a/.github/workflows/canary.yml b/.github/workflows/canary.yml
index 0b1c2234..154484f7 100644
--- a/.github/workflows/canary.yml
+++ b/.github/workflows/canary.yml
@@ -3,9 +3,6 @@ on:
   push:
     branches:
     - main
-  pull_request:
-    branches:
-    - main
   workflow_dispatch:
 
 jobs:
diff --git a/src/cli/config/bundler.ts b/src/cli/config/bundler.ts
index 9711ab33..5d61a1d7 100644
--- a/src/cli/config/bundler.ts
+++ b/src/cli/config/bundler.ts
@@ -124,7 +124,8 @@ export const rpcArgsSchema = z.object({
     "rpc-url": z.string().url(),
     "send-transaction-rpc-url": z.string().url().optional(),
     "polling-interval": z.number().int().min(0),
-    "max-block-range": z.number().int().min(0).optional()
+    "max-block-range": z.number().int().min(0).optional(),
+    "block-tag-support-disabled": z.boolean().optional().default(false)
 })
 
 export const bundleCopmressionArgsSchema = z.object({
diff --git a/src/cli/config/options.ts b/src/cli/config/options.ts
index 5eed5969..0f02846d 100644
--- a/src/cli/config/options.ts
+++ b/src/cli/config/options.ts
@@ -252,6 +252,13 @@ export const rpcOptions: CliCommandOptions<IRpcArgsInput> = {
         description: "Max block range for getLogs calls",
         type: "number",
         require: false
+    },
+    "block-tag-support-disabled": {
+        description:
+            "Disable sending block tag when sending eth_estimateGas call",
+        type: "boolean",
+        require: false,
+        default: false
     }
 }
 
diff --git a/src/cli/setupServer.ts b/src/cli/setupServer.ts
index 9635d2fe..fe51fd9f 100644
--- a/src/cli/setupServer.ts
+++ b/src/cli/setupServer.ts
@@ -203,6 +203,7 @@ const getExecutor = ({
         !parsedArgs.tenderly,
         parsedArgs["legacy-transactions"],
         parsedArgs["fixed-gas-limit-for-estimation"],
+        parsedArgs["block-tag-support-disabled"],
         parsedArgs["local-gas-limit-calculation"]
     )
 }
diff --git a/src/executor/executor.ts b/src/executor/executor.ts
index ae692166..83ce8076 100644
--- a/src/executor/executor.ts
+++ b/src/executor/executor.ts
@@ -116,6 +116,7 @@ export class Executor {
     reputationManager: InterfaceReputationManager
     compressionHandler: CompressionHandler | null
     gasPriceManager: GasPriceManager
+    disableBlockTagSupport: boolean
     mutex: Mutex
 
     constructor(
@@ -131,6 +132,7 @@ export class Executor {
         simulateTransaction = false,
         legacyTransactions = false,
         fixedGasLimitForEstimation?: bigint,
+        disableBlockTagSupport = false,
         localGasLimitCalculation = false
     ) {
         this.publicClient = publicClient
@@ -145,6 +147,7 @@ export class Executor {
         this.localGasLimitCalculation = localGasLimitCalculation
         this.compressionHandler = compressionHandler
         this.gasPriceManager = gasPriceManager
+        this.disableBlockTagSupport = disableBlockTagSupport
         this.entryPoints = entryPoints
 
         this.mutex = new Mutex()
@@ -263,7 +266,7 @@ export class Executor {
             newRequest.nonce,
             newRequest.maxFeePerGas,
             newRequest.maxPriorityFeePerGas,
-            "latest",
+            this.disableBlockTagSupport ? undefined : "latest",
             this.legacyTransactions,
             this.fixedGasLimitForEstimation,
             this.reputationManager,
@@ -574,7 +577,7 @@ export class Executor {
                 nonce,
                 gasPriceParameters.maxFeePerGas,
                 gasPriceParameters.maxPriorityFeePerGas,
-                "pending",
+                this.disableBlockTagSupport ? undefined : "pending",
                 this.legacyTransactions,
                 this.fixedGasLimitForEstimation,
                 this.reputationManager,
@@ -854,7 +857,7 @@ export class Executor {
                 nonce,
                 gasPriceParameters.maxFeePerGas,
                 gasPriceParameters.maxPriorityFeePerGas,
-                "pending",
+                this.disableBlockTagSupport ? undefined : "pending",
                 this.legacyTransactions,
                 this.fixedGasLimitForEstimation,
                 this.reputationManager,
diff --git a/src/executor/utils.ts b/src/executor/utils.ts
index 0e98e707..7064c610 100644
--- a/src/executor/utils.ts
+++ b/src/executor/utils.ts
@@ -127,7 +127,7 @@ export async function filterOpsAndEstimateGas(
     nonce: number,
     maxFeePerGas: bigint,
     maxPriorityFeePerGas: bigint,
-    blockTag: "latest" | "pending",
+    blockTag: "latest" | "pending" | undefined,
     onlyPre1559: boolean,
     fixedGasLimitForEstimation: bigint | undefined,
     reputationManager: InterfaceReputationManager,
@@ -176,7 +176,7 @@ export async function filterOpsAndEstimateGas(
                     {
                         account: wallet,
                         nonce: nonce,
-                        blockTag,
+                        blockTag: blockTag,
                         ...(fixedGasLimitForEstimation !== undefined && {
                             gas: fixedGasLimitForEstimation
                         }),
@@ -200,14 +200,14 @@ export async function filterOpsAndEstimateGas(
                     data: createCompressedCalldata(opsToSend, perOpInflatorId),
                     gas: fixedGasLimitForEstimation,
                     nonce: nonce,
-                    blockTag,
+                    blockTag: blockTag,
                     ...gasOptions
                 })
             }
 
             return { simulatedOps, gasLimit, resubmitAllOps: false }
         } catch (err: unknown) {
-            logger.error({ err }, "error estimating gas")
+            logger.error({ err, blockTag }, "error estimating gas")
             const e = parseViemError(err)
 
             if (e instanceof ContractFunctionRevertedError) {
@@ -345,7 +345,7 @@ export async function filterOpsAndEstimateGas(
             } else {
                 sentry.captureException(err)
                 logger.error(
-                    { error: JSON.stringify(err) },
+                    { error: JSON.stringify(err), blockTag },
                     "error estimating gas"
                 )
                 return { simulatedOps: [], gasLimit: 0n, resubmitAllOps: false }