diff --git a/src/api/info/_methods/_base/_schemas.ts b/src/api/info/_methods/_base/_schemas.ts
index c9716751..11c05588 100644
--- a/src/api/info/_methods/_base/_schemas.ts
+++ b/src/api/info/_methods/_base/_schemas.ts
@@ -348,6 +348,11 @@ export type UserFill = {
   tid: number;
   /** Token in which the fee is denominated (e.g., USDC). */
   feeToken: string;
+  /**
+   * Fee trial escrow amount.
+   * @pattern ^[0-9]+(\.[0-9]+)?$
+   */
+  feeTrialEscrow?: string;
   /** ID of the TWAP. */
   twapId: number | null;
 };
diff --git a/src/api/info/_methods/userFills.ts b/src/api/info/_methods/userFills.ts
index 81a2bd91..fbfd01a1 100644
--- a/src/api/info/_methods/userFills.ts
+++ b/src/api/info/_methods/userFills.ts
@@ -39,7 +39,7 @@ export type UserFillsResponse = (UserFill & {
      * Address of the liquidated user.
      * @pattern ^0x[a-fA-F0-9]{40}$
      */
-    liquidatedUser: `0x${string}`;
+    liquidatedUser?: `0x${string}`;
     /**
      * Mark price at the time of liquidation.
      * @pattern ^[0-9]+(\.[0-9]+)?$
diff --git a/tests/api/info/userFills.test.ts b/tests/api/info/userFills.test.ts
index 7caacbf4..538a9d74 100644
--- a/tests/api/info/userFills.test.ts
+++ b/tests/api/info/userFills.test.ts
@@ -16,6 +16,7 @@ runTest({
       { user: "0x563C175E6f11582f65D6d9E360A618699DEe14a9" },
       { user: "0x8172cc20bc3a55dcd07c75dd37ac0c2534de3b84", aggregateByTime: true },
       { user: "0x563C175E6f11582f65D6d9E360A618699DEe14a9", aggregateByTime: false },
+      { user: "0xd8cb8d9747f50be8e423c698f9104ee090540961" }, // feeTrialEscrow present
     ];
 
     const data = await Promise.all(params.map((p) => client.userFills(p)));
@@ -23,6 +24,7 @@ runTest({
     schemaCoverage(paramsSchema, params);
     schemaCoverage(responseSchema, data, [
       "#/items/properties/twapId/defined",
+      "#/items/properties/liquidation/properties/liquidatedUser/missing",
     ]);
   },
 });
diff --git a/tests/api/info/userFillsByTime.test.ts b/tests/api/info/userFillsByTime.test.ts
index 2445e96a..fb195818 100644
--- a/tests/api/info/userFillsByTime.test.ts
+++ b/tests/api/info/userFillsByTime.test.ts
@@ -23,6 +23,8 @@ runTest({
       { user: "0x563C175E6f11582f65D6d9E360A618699DEe14a9", startTime: now - fiveYears, aggregateByTime: false },
       { user: "0x563C175E6f11582f65D6d9E360A618699DEe14a9", startTime: now - fiveYears, reversed: true },
       { user: "0x563C175E6f11582f65D6d9E360A618699DEe14a9", startTime: now - fiveYears, reversed: false },
+      { user: "0xd8cb8d9747f50be8e423c698f9104ee090540961", startTime: now - fiveYears }, // liquidation without liquidatedUser
+      { user: "0xd8cb8d9747f50be8e423c698f9104ee090540961", startTime: now - fiveYears, reversed: true }, // feeTrialEscrow present
     ];
 
     const data = await Promise.all(params.map((p) => client.userFillsByTime(p)));
diff --git a/tests/api/info/userTwapSliceFills.test.ts b/tests/api/info/userTwapSliceFills.test.ts
index e87c91b2..b10d30c5 100644
--- a/tests/api/info/userTwapSliceFills.test.ts
+++ b/tests/api/info/userTwapSliceFills.test.ts
@@ -21,6 +21,7 @@ runTest({
     schemaCoverage(paramsSchema, params);
     schemaCoverage(responseSchema, data, [
       "#/items/properties/fill/properties/builderFee/present",
+      "#/items/properties/fill/properties/feeTrialEscrow/present",
       "#/items/properties/fill/properties/twapId/defined",
     ]);
   },
diff --git a/tests/api/info/userTwapSliceFillsByTime.test.ts b/tests/api/info/userTwapSliceFillsByTime.test.ts
index 1605dbbd..821da227 100644
--- a/tests/api/info/userTwapSliceFillsByTime.test.ts
+++ b/tests/api/info/userTwapSliceFillsByTime.test.ts
@@ -25,6 +25,7 @@ runTest({
     schemaCoverage(paramsSchema, params);
     schemaCoverage(responseSchema, data, [
       "#/items/properties/fill/properties/builderFee/present",
+      "#/items/properties/fill/properties/feeTrialEscrow/present",
       "#/items/properties/fill/properties/twapId/defined",
     ]);
   },
diff --git a/tests/api/subscription/userEvents.test.ts b/tests/api/subscription/userEvents.test.ts
index 2acd933b..4af8cd87 100644
--- a/tests/api/subscription/userEvents.test.ts
+++ b/tests/api/subscription/userEvents.test.ts
@@ -44,6 +44,7 @@ runTestWithExchange({
       "#/anyOf/4/properties/twapHistory/items/properties/twapId/missing",
       "#/anyOf/5/properties/twapSliceFills/items/properties/fill/properties/side/enum/1",
       "#/anyOf/5/properties/twapSliceFills/items/properties/fill/properties/builderFee/present",
+      "#/anyOf/5/properties/twapSliceFills/items/properties/fill/properties/feeTrialEscrow/present",
       "#/anyOf/5/properties/twapSliceFills/items/properties/fill/properties/twapId/defined",
     ]);
   },
diff --git a/tests/api/subscription/userFills.test.ts b/tests/api/subscription/userFills.test.ts
index eb0869b8..5fe26767 100644
--- a/tests/api/subscription/userFills.test.ts
+++ b/tests/api/subscription/userFills.test.ts
@@ -25,7 +25,9 @@ runTest({
     schemaCoverage(paramsSchema, params);
     schemaCoverage(responseSchema, data, [
       "#/properties/fills/items/properties/builderFee/present",
+      "#/properties/fills/items/properties/feeTrialEscrow/present",
       "#/properties/fills/items/properties/twapId/defined",
+      "#/properties/fills/items/properties/liquidation/properties/liquidatedUser/missing",
       "#/properties/isSnapshot/missing",
     ]);
   },
diff --git a/tests/api/subscription/userTwapSliceFills.test.ts b/tests/api/subscription/userTwapSliceFills.test.ts
index 0c4ca55b..3aea86dc 100644
--- a/tests/api/subscription/userTwapSliceFills.test.ts
+++ b/tests/api/subscription/userTwapSliceFills.test.ts
@@ -29,6 +29,7 @@ runTest({
     schemaCoverage(paramsSchema, params);
     schemaCoverage(responseSchema, data, [
       "#/properties/twapSliceFills/items/properties/fill/properties/builderFee/present",
+      "#/properties/twapSliceFills/items/properties/fill/properties/feeTrialEscrow/present",
       "#/properties/twapSliceFills/items/properties/fill/properties/twapId/defined",
       "#/properties/isSnapshot/missing",
     ]);