diff --git a/api/package.json b/api/package.json
index 0ce9de92..4fc17d8d 100644
--- a/api/package.json
+++ b/api/package.json
@@ -20,7 +20,7 @@
   },
   "devDependencies": {
     "@types/hapi__hapi": "^18.2.5",
-    "@types/hapi__joi": "^16.0.2",
+    "@types/hapi__joi": "^17.1.6",
     "@types/jest": "^26.0.3",
     "@types/nconf": "^0.10.0",
     "@types/pg": "^7.14.7",
@@ -39,4 +39,4 @@
     "nconf": "^0.11.0",
     "pg": "^8.5.1"
   }
-}
+}
\ No newline at end of file
diff --git a/api/src/db-connection.ts b/api/src/db-connection.ts
index bb5f7d8c..8019c19f 100644
--- a/api/src/db-connection.ts
+++ b/api/src/db-connection.ts
@@ -12,6 +12,14 @@ import {
 } from "./types/api";
 import * as validation from "./types/validation";
 import { DBConfig } from "./conf";
+import {
+  LogEntryRow,
+  BoundingBoxRow,
+  EntityDataRow,
+  EntityRow,
+  EntityDataRowType,
+  EntityRowUpdates,
+} from "./types/db";
 
 /**
  * Create a Knex query builder that can be used to submit queries to the database.
diff --git a/api/src/types/db.ts b/api/src/types/db.ts
index aab3ded6..93d9a060 100644
--- a/api/src/types/db.ts
+++ b/api/src/types/db.ts
@@ -3,18 +3,18 @@
  * in the database. Correspond to schemas in 'data-processing/common/models.py'
  */
 
-interface PaperRow {
+export interface PaperRow {
   s2_id: string;
   arxiv_id: string;
 }
 
-interface VersionRow {
+export interface VersionRow {
   id: number;
   paper_id: string;
   index: number;
 }
 
-interface EntityRow {
+export interface EntityRow {
   paper_id: string;
   id: number;
   version: number;
@@ -22,9 +22,9 @@ interface EntityRow {
   source: string;
 }
 
-type EntityRowUpdates = Omit<EntityRow, "id" | "type" | "paper_id">;
+export type EntityRowUpdates = Omit<EntityRow, "id" | "type" | "paper_id">;
 
-interface BoundingBoxRow {
+export interface BoundingBoxRow {
   id: number;
   entity_id: number;
   source: string;
@@ -35,7 +35,7 @@ interface BoundingBoxRow {
   height: number;
 }
 
-interface EntityDataRow {
+export interface EntityDataRow {
   id: number;
   entity_id: number;
   source: string;
@@ -46,14 +46,14 @@ interface EntityDataRow {
   relation_type: string | null;
 }
 
-type EntityDataRowType =
+export type EntityDataRowType =
   | "boolean"
   | "integer"
   | "float"
   | "string"
   | "relation-id";
 
-interface LogEntryRow {
+export interface LogEntryRow {
   ip_address: string;
   username: string | null;
   level: string;