diff --git a/lib/src/d4h.ts b/lib/src/d4h.ts
index f878d6d..a2546c4 100644
--- a/lib/src/d4h.ts
+++ b/lib/src/d4h.ts
@@ -1,6 +1,6 @@
 import HttpUtils from './httpUtils'
 import type { Group } from './group'
-import type { Member } from './member'
+import type { Member, MemberUpdate } from './member'
 
 const D4H_FETCH_LIMIT = 250
 const D4H_BASE_URL = 'https://api.d4h.org/v2'
@@ -31,7 +31,7 @@ export default class D4H {
     /**************** MEMBERS *******************/
     /********************************************/
     
-    async getMember(id: number, options?: GetMemberOptions): Promise<Member> {
+    getMemberAsync(id: number, options?: GetMemberOptions): Promise<Member> {
         const url = new URL(`${D4H_BASE_URL}/team/members/${id}`)
         
         if (options !== undefined) {
@@ -42,10 +42,10 @@ export default class D4H {
             }
         }
 
-        return await this._httpUtils.get<Member>(url)
+        return this._httpUtils.getAsync<Member>(url)
     }
 
-    async getMembers(options?: GetMembersOptions): Promise<Member[]> {
+    getMembersAsync(options?: GetMembersOptions): Promise<Member[]> {
         const url = new URL(`${D4H_BASE_URL}/team/members`)
 
         if (options !== undefined) {
@@ -64,19 +64,24 @@ export default class D4H {
             }
         }
 
-        return await this._httpUtils.getMany(url)
+        return this._httpUtils.getManyAsync(url)
+    }
+
+    updateMemberAsync(id: number, updates: MemberUpdate): Promise<Member> {
+        const url = new URL(`${D4H_BASE_URL}/team/members/${id}`)
+        return this._httpUtils.putAsync(url, updates)
     }
 
     /********************************************/
     /***************** GROUPS *******************/
     /********************************************/
 
-    async getGroup(id: number): Promise<Group> {
+    getGroupAsync(id: number): Promise<Group> {
         const url = new URL(`${D4H_BASE_URL}/team/groups/${id}`)
-        return await this._httpUtils.get<Group>(url)
+        return this._httpUtils.getAsync<Group>(url)
     }
 
-    async getGroups(options?: GetGroupsOptions): Promise<Group[]> {
+    getGroupsAsync(options?: GetGroupsOptions): Promise<Group[]> {
         const url = new URL(`${D4H_BASE_URL}/team/groups`)
 
         if (options !== undefined) {
@@ -91,6 +96,6 @@ export default class D4H {
             }
         }
 
-        return await this._httpUtils.getMany(url)
+        return this._httpUtils.getManyAsync(url)
     }
 }
\ No newline at end of file
diff --git a/lib/src/httpUtils.ts b/lib/src/httpUtils.ts
index eac3c82..ff6ed6a 100644
--- a/lib/src/httpUtils.ts
+++ b/lib/src/httpUtils.ts
@@ -9,6 +9,11 @@ interface D4HError {
     statusCode: number
 }
 
+enum HttpMethod {
+    Get = 'GET',
+    Put = 'PUT',
+}
+
 export default class HttpUtils {
     private readonly _fetchLimit: number
     private readonly _token: string
@@ -22,16 +27,25 @@ export default class HttpUtils {
         this._token = token
     }
 
-    async get<DataType>(url: URL): Promise<DataType> {
-        const method = 'GET'
+    async requestAsync<TBody, TResponse>(url: URL, method: HttpMethod, body?: TBody): Promise<TResponse> {
         const headers = {
             'Authorization': `Bearer ${this._token}`,
+            'Content-Type': 'application/json'
         }
     
         console.log(url)
+
+        const options: RequestInit = {
+            method,
+            headers,
+        }
+
+        if (body) {
+            options.body = JSON.stringify(body)
+        }
     
-        const rawResponse = await fetch(url.toString(), { method, headers })
-        const response = await rawResponse.json() as D4HResponse<DataType> & D4HError
+        const rawResponse = await fetch(url.toString(), options)
+        const response = await rawResponse.json() as D4HResponse<TResponse> & D4HError
     
         if (response.statusCode !== 200) {
             const d4hError = response as D4HError
@@ -40,8 +54,12 @@ export default class HttpUtils {
     
         return response.data
     }
+
+    async getAsync<DataType>(url: URL): Promise<DataType> {
+        return this.requestAsync<never, DataType>(url, HttpMethod.Get)
+    }
     
-    async getMany<DataType>(url: URL): Promise<DataType[]> {
+    async getManyAsync<DataType>(url: URL): Promise<DataType[]> {
         let results: DataType[] = []
         
         let offset = 0
@@ -52,7 +70,7 @@ export default class HttpUtils {
             urlWithOffset.searchParams.append('offset', offset.toString())
             urlWithOffset.searchParams.append('limit', this._fetchLimit.toString())
     
-            const newResults = await this.get<DataType[]>(urlWithOffset)
+            const newResults = await this.getAsync<DataType[]>(urlWithOffset)
             results = results.concat(newResults)
             offset += this._fetchLimit
     
@@ -63,4 +81,8 @@ export default class HttpUtils {
         
         return results
     }
+
+    async putAsync<TBody, TResponse>(url: URL, body: TBody): Promise<TResponse> {
+        return this.requestAsync(url, HttpMethod.Put, body)
+    }
 }
diff --git a/lib/src/member.ts b/lib/src/member.ts
index 2eb1b7b..b08652a 100644
--- a/lib/src/member.ts
+++ b/lib/src/member.ts
@@ -46,4 +46,36 @@ export interface Member {
     ref: string;
     status: MemberStatus;
     workphone: string;
+}
+
+export interface MemberUpdate {
+    name?: string | null
+    ref?: string | null
+    id_tag?: string | null
+    status_id?: number
+    status_custom_id?: number
+    retired_reason_id?: number
+    date_leave?: Date
+    date_join?: Date
+    position?: string | null
+    role_id?: number
+    cost_per_hour?: number
+    cost_per_use?: number
+    address_street?: string | null
+    address_city?: string | null
+    address_region?: string | null
+    address_postcode?: string | null
+    address_country?: string | null
+    lat?: number
+    lng?: number
+    gridref?: string | null
+    location_bookmark_id?: number
+    email?: string | null
+    phone_mobile?: string | null
+    phone_home?: string | null
+    phone_work?: string | null
+    pager?: string | null
+    pager_email?: string | null
+    address?: string | null
+    notes?: string | null
 }
\ No newline at end of file
diff --git a/test/index.ts b/test/index.ts
index b00c52a..c7a0df1 100644
--- a/test/index.ts
+++ b/test/index.ts
@@ -15,8 +15,20 @@ let getMembersOptions: GetMembersOptions = {
 };
 
 let main = async function() {
+    // Only execute update code on an instance where that's OK.
+    // Double-check your API key. Double-check what you're modifying.
+    /*try {
+        const memberId = 0000 // Set this to a real ID
+        await api.updateMemberAsync(memberId, {
+            notes: null,
+        })
+    } catch (err) {
+        console.log(JSON.stringify(err));
+        return;
+    }*/
+
     try {
-        let members = await api.getMembers(getMembersOptions);
+        const members = await api.getMembersAsync(getMembersOptions);
         console.log(`Retrieved ${members.length} members.`);
     } catch (err) {
         console.log(JSON.stringify(err));
@@ -24,13 +36,12 @@ let main = async function() {
     }
 
     try {
-        let groups = await api.getGroups();
+        const groups = await api.getGroupsAsync();
         console.log(`Retrieved ${groups.length} groups.`);
     } catch (err) {
         console.log(JSON.stringify(err));
         return;
     }
-    
 }
 
 main().then(() => console.log("Execution complete"));
\ No newline at end of file