diff --git a/package-lock.json b/package-lock.json
index ef30dff5c..15835d105 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28,7 +28,7 @@
         "eslint-config-prettier": "^9.1.0",
         "mocha": "^10.4.0",
         "npm-upgrade": "^3.1.0",
-        "prettier": "^3.3.0",
+        "prettier": "^3.3.1",
         "ts-node": "^10.9.2",
         "tsconfig-paths": "^4.2.0",
         "typedoc": "^0.25.13",
@@ -6096,9 +6096,9 @@
       }
     },
     "node_modules/prettier": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.3.0.tgz",
-      "integrity": "sha512-J9odKxERhCQ10OC2yb93583f6UnYutOeiV5i0zEDS7UGTdUt0u+y8erxl3lBKvwo/JHyyoEdXjwp4dke9oyZ/g==",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.3.1.tgz",
+      "integrity": "sha512-7CAwy5dRsxs8PHXT3twixW9/OEll8MLE0VRPCJyl7CkS6VHGPSlsVaWTiASPTyGyYRyApxlaWTzwUxVNrhcwDg==",
       "dev": true,
       "bin": {
         "prettier": "bin/prettier.cjs"
diff --git a/package.json b/package.json
index aa538ff88..c6aad1b9a 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "eslint-config-prettier": "^9.1.0",
     "mocha": "^10.4.0",
     "npm-upgrade": "^3.1.0",
-    "prettier": "^3.3.0",
+    "prettier": "^3.3.1",
     "ts-node": "^10.9.2",
     "tsconfig-paths": "^4.2.0",
     "typedoc": "^0.25.13",
diff --git a/packages/prio3/src/prio3.spec.ts b/packages/prio3/src/prio3.spec.ts
index 8c10a664d..607e734cf 100644
--- a/packages/prio3/src/prio3.spec.ts
+++ b/packages/prio3/src/prio3.spec.ts
@@ -9,22 +9,14 @@ import {
 import { TestFlp128 } from "./flp.spec.js";
 import { XofShake128 } from "@divviup/xof";
 import type { TestVector } from "@divviup/vdaf";
-import countTestVector0 from "./testVectors/Prio3Count_0.json" assert { type:
-  "json" };
-import countTestVector1 from "./testVectors/Prio3Count_1.json" assert { type:
-  "json" };
-import histogramTestVector0 from "./testVectors/Prio3Histogram_0.json" assert { type:
-  "json" };
-import histogramTestVector1 from "./testVectors/Prio3Histogram_1.json" assert { type:
-  "json" };
-import sumTestVector0 from "./testVectors/Prio3Sum_0.json" assert { type:
-  "json" };
-import sumTestVector1 from "./testVectors/Prio3Sum_1.json" assert { type:
-  "json" };
-import sumVecTestVector0 from "./testVectors/Prio3SumVec_0.json" assert { type:
-  "json" };
-import sumVecTestVector1 from "./testVectors/Prio3SumVec_1.json" assert { type:
-  "json" };
+import countTestVector0 from "./testVectors/Prio3Count_0.json" assert { type: "json" };
+import countTestVector1 from "./testVectors/Prio3Count_1.json" assert { type: "json" };
+import histogramTestVector0 from "./testVectors/Prio3Histogram_0.json" assert { type: "json" };
+import histogramTestVector1 from "./testVectors/Prio3Histogram_1.json" assert { type: "json" };
+import sumTestVector0 from "./testVectors/Prio3Sum_0.json" assert { type: "json" };
+import sumTestVector1 from "./testVectors/Prio3Sum_1.json" assert { type: "json" };
+import sumVecTestVector0 from "./testVectors/Prio3SumVec_0.json" assert { type: "json" };
+import sumVecTestVector1 from "./testVectors/Prio3SumVec_1.json" assert { type: "json" };
 
 async function assertCountTestVector(
   testVector: TestVector<null, number | boolean, number>,
diff --git a/packages/xof/src/index.spec.ts b/packages/xof/src/index.spec.ts
index ea4afeaa8..717ac9290 100644
--- a/packages/xof/src/index.spec.ts
+++ b/packages/xof/src/index.spec.ts
@@ -1,8 +1,7 @@
 import { assert } from "chai";
 import { XofShake128 } from "./index.js";
 import { Field128, Field64 } from "@divviup/field";
-import XofShake128TestVector from "./testVectors/XofShake128.json" assert { type:
-  "json" };
+import XofShake128TestVector from "./testVectors/XofShake128.json" assert { type: "json" };
 
 function assertBuffersEqual(x: Uint8Array, y: Uint8Array) {
   assert.equal(Buffer.from(x).toString("hex"), Buffer.from(y).toString("hex"));