diff --git a/briar-headless/README.md b/briar-headless/README.md
index a27d9dc3d39fefb792dbb229e00abc407550fe94..d35bcc98eebb208d05d55b647aa02454f941d56d 100644
--- a/briar-headless/README.md
+++ b/briar-headless/README.md
@@ -72,9 +72,16 @@ Returns a JSON array of contacts:
 The only workaround is to add a contact to the Briar app running on a rooted Android phone
 and then move its database (and key files) to the headless peer.
 
+### Removing a contact
+
+`DELETE /v1/contacts/{contactId}`
+
+The `{contactId}` is the `contactId` of the contact (`1` in the example above).
+It returns with a status code `200`, if removal was successful.
+
 ### Listing all private messages
 
-`GET /messages/{contactId}`
+`GET /v1/messages/{contactId}`
 
 The `{contactId}` is the `contactId` of the contact (`1` in the example above).
 It returns a JSON array of private messages:
@@ -100,7 +107,7 @@ Attention: There can messages of other `type`s where the message `text` is `null
 
 ### Writing a private message
 
-`POST /messages/{contactId}`
+`POST /v1/messages/{contactId}`
 
 The text of the message should be posted as JSON:
 
diff --git a/briar-headless/build.gradle b/briar-headless/build.gradle
index eae48965ff60fa61b0e31a172cf0ec67ecb065d6..332f3026daf42e80f3ba513de5bcd9a373a76d69 100644
--- a/briar-headless/build.gradle
+++ b/briar-headless/build.gradle
@@ -1,8 +1,8 @@
 plugins {
 	id 'java'
 	id 'idea'
-	id 'org.jetbrains.kotlin.jvm' version '1.2.70'
-	id 'org.jetbrains.kotlin.kapt' version '1.2.70'
+	id 'org.jetbrains.kotlin.jvm' version '1.2.71'
+	id 'org.jetbrains.kotlin.kapt' version '1.2.71'
 	id 'witness'
 }
 apply from: 'witness.gradle'
@@ -14,9 +14,9 @@ dependencies {
 	implementation project(path: ':briar-core', configuration: 'default')
 	implementation project(path: ':bramble-java', configuration: 'default')
 
-	implementation 'io.javalin:javalin:2.2.0'
+	implementation 'io.javalin:javalin:2.3.0'
 	implementation 'org.slf4j:slf4j-simple:1.7.25'
-	implementation 'com.fasterxml.jackson.core:jackson-databind:2.9.6'
+	implementation 'com.fasterxml.jackson.core:jackson-databind:2.9.7'
 	implementation 'com.github.ajalt:clikt:1.5.0'
 
 	kapt 'com.google.dagger:dagger-compiler:2.0.2'
@@ -24,11 +24,11 @@ dependencies {
 	testImplementation project(path: ':bramble-api', configuration: 'testOutput')
 	testImplementation project(path: ':bramble-core', configuration: 'testOutput')
 
-	def junitVersion = '5.2.0'
+	def junitVersion = '5.3.1'
 	testImplementation "org.junit.jupiter:junit-jupiter-api:$junitVersion"
 	testImplementation "org.junit.jupiter:junit-jupiter-params:$junitVersion"
 	testRuntime "org.junit.jupiter:junit-jupiter-engine:$junitVersion"
-	testImplementation "io.mockk:mockk:1.8.6"
+	testImplementation "io.mockk:mockk:1.8.9"
 	testImplementation "org.skyscreamer:jsonassert:1.5.0"
 }
 
diff --git a/briar-headless/src/main/java/org/briarproject/briar/headless/Router.kt b/briar-headless/src/main/java/org/briarproject/briar/headless/Router.kt
index 7e8000ce481f195362b05f96577393385b7e1a80..c155fcfd9a6bb88076ee51256ce38433b6ba2e07 100644
--- a/briar-headless/src/main/java/org/briarproject/briar/headless/Router.kt
+++ b/briar-headless/src/main/java/org/briarproject/briar/headless/Router.kt
@@ -7,9 +7,11 @@ import io.javalin.Context
 import io.javalin.Javalin
 import io.javalin.JavalinEvent.SERVER_START_FAILED
 import io.javalin.JavalinEvent.SERVER_STOPPED
+import io.javalin.NotFoundResponse
 import io.javalin.apibuilder.ApiBuilder.*
 import io.javalin.core.util.ContextUtil
 import io.javalin.core.util.Header.AUTHORIZATION
+import org.briarproject.bramble.api.contact.ContactId
 import org.briarproject.briar.headless.blogs.BlogController
 import org.briarproject.briar.headless.contact.ContactController
 import org.briarproject.briar.headless.event.WebSocketController
@@ -63,6 +65,9 @@ constructor(
             path("/v1") {
                 path("/contacts") {
                     get { ctx -> contactController.list(ctx) }
+                    path("/:contactId") {
+                        delete { ctx -> contactController.delete(ctx) }
+                    }
                 }
                 path("/messages/:contactId") {
                     get { ctx -> messagingController.list(ctx) }
@@ -112,6 +117,21 @@ constructor(
 
 }
 
+/**
+ * Returns a [ContactId] from the "contactId" path parameter.
+ *
+ * @throws NotFoundResponse when contactId is not a number.
+ */
+fun Context.getContactIdFromPathParam(): ContactId {
+    val contactString = pathParam("contactId")
+    val contactInt = try {
+        Integer.parseInt(contactString)
+    } catch (e: NumberFormatException) {
+        throw NotFoundResponse()
+    }
+    return ContactId(contactInt)
+}
+
 /**
  * Returns a String from the JSON field or throws [BadRequestResponse] if null or empty.
  */
diff --git a/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactController.kt b/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactController.kt
index 9eb21a12047c1cb4bef4a8f5f92c3ad881c33448..d7a0bfbc4c62e5009f664a384ed55d59917bd1af 100644
--- a/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactController.kt
+++ b/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactController.kt
@@ -5,5 +5,6 @@ import io.javalin.Context
 interface ContactController {
 
     fun list(ctx: Context): Context
+    fun delete(ctx: Context): Context
 
 }
diff --git a/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactControllerImpl.kt b/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactControllerImpl.kt
index bf94c70a562b3a8a75176ef8660006643fb75cb3..89f4c07893cf0e6acdafe10863152910ff7324b5 100644
--- a/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactControllerImpl.kt
+++ b/briar-headless/src/main/java/org/briarproject/briar/headless/contact/ContactControllerImpl.kt
@@ -1,7 +1,10 @@
 package org.briarproject.briar.headless.contact
 
 import io.javalin.Context
+import io.javalin.NotFoundResponse
 import org.briarproject.bramble.api.contact.ContactManager
+import org.briarproject.bramble.api.db.NoSuchContactException
+import org.briarproject.briar.headless.getContactIdFromPathParam
 import javax.annotation.concurrent.Immutable
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -19,4 +22,14 @@ constructor(private val contactManager: ContactManager) : ContactController {
         return ctx.json(contacts)
     }
 
+    override fun delete(ctx: Context): Context {
+        val contactId = ctx.getContactIdFromPathParam()
+        try {
+            contactManager.removeContact(contactId)
+        } catch (e: NoSuchContactException) {
+            throw NotFoundResponse()
+        }
+        return ctx
+    }
+
 }
diff --git a/briar-headless/src/main/java/org/briarproject/briar/headless/messaging/MessagingControllerImpl.kt b/briar-headless/src/main/java/org/briarproject/briar/headless/messaging/MessagingControllerImpl.kt
index 66d951aa8cb8a68dfe9c7d523adac9e85534828d..0521666f97981df63a92174e3aa3f77977ab7498 100644
--- a/briar-headless/src/main/java/org/briarproject/briar/headless/messaging/MessagingControllerImpl.kt
+++ b/briar-headless/src/main/java/org/briarproject/briar/headless/messaging/MessagingControllerImpl.kt
@@ -26,6 +26,7 @@ import org.briarproject.briar.api.privategroup.invitation.GroupInvitationRequest
 import org.briarproject.briar.api.privategroup.invitation.GroupInvitationResponse
 import org.briarproject.briar.headless.event.WebSocketController
 import org.briarproject.briar.headless.event.output
+import org.briarproject.briar.headless.getContactIdFromPathParam
 import org.briarproject.briar.headless.getFromJson
 import org.briarproject.briar.headless.json.JsonDict
 import java.util.concurrent.Executor
@@ -84,13 +85,7 @@ constructor(
     }
 
     private fun getContact(ctx: Context): Contact {
-        val contactString = ctx.pathParam("contactId")
-        val contactInt = try {
-            Integer.parseInt(contactString)
-        } catch (e: NumberFormatException) {
-            throw NotFoundResponse()
-        }
-        val contactId = ContactId(contactInt)
+        val contactId = ctx.getContactIdFromPathParam()
         return try {
             contactManager.getContact(contactId)
         } catch (e: NoSuchContactException) {
diff --git a/briar-headless/src/test/java/org/briarproject/briar/headless/contact/ContactControllerTest.kt b/briar-headless/src/test/java/org/briarproject/briar/headless/contact/ContactControllerTest.kt
index 7566c98421274b61a670faf0385cf9f40385c6d5..428b9aaa22f07094911e98f88862dec2aa539872 100644
--- a/briar-headless/src/test/java/org/briarproject/briar/headless/contact/ContactControllerTest.kt
+++ b/briar-headless/src/test/java/org/briarproject/briar/headless/contact/ContactControllerTest.kt
@@ -1,10 +1,16 @@
 package org.briarproject.briar.headless.contact
 
+import io.javalin.NotFoundResponse
 import io.javalin.json.JavalinJson.toJson
+import io.mockk.Runs
 import io.mockk.every
+import io.mockk.just
 import org.briarproject.bramble.api.contact.Contact
+import org.briarproject.bramble.api.contact.ContactId
+import org.briarproject.bramble.api.db.NoSuchContactException
 import org.briarproject.bramble.identity.output
 import org.briarproject.briar.headless.ControllerTest
+import org.junit.jupiter.api.Assertions.assertThrows
 import org.junit.jupiter.api.Test
 
 internal class ContactControllerTest : ControllerTest() {
@@ -25,6 +31,30 @@ internal class ContactControllerTest : ControllerTest() {
         controller.list(ctx)
     }
 
+    @Test
+    fun testDelete() {
+        every { ctx.pathParam("contactId") } returns "1"
+        every { contactManager.removeContact(ContactId(1)) } just Runs
+        controller.delete(ctx)
+    }
+
+    @Test
+    fun testDeleteInvalidContactId() {
+        every { ctx.pathParam("contactId") } returns "foo"
+        assertThrows(NotFoundResponse::class.java) {
+            controller.delete(ctx)
+        }
+    }
+
+    @Test
+    fun testDeleteNonexistentContactId() {
+        every { ctx.pathParam("contactId") } returns "1"
+        every { contactManager.removeContact(ContactId(1)) } throws NoSuchContactException()
+        assertThrows(NotFoundResponse::class.java) {
+            controller.delete(ctx)
+        }
+    }
+
     @Test
     fun testOutputContact() {
         val json = """
diff --git a/briar-headless/witness.gradle b/briar-headless/witness.gradle
index 4524a116c5974b512ee0fcac3863e9b37230f553..177a5a0c275694ef56821e03fbafd04f9fed49ab 100644
--- a/briar-headless/witness.gradle
+++ b/briar-headless/witness.gradle
@@ -1,26 +1,26 @@
 dependencyVerification {
     verify = [
         'com.fasterxml.jackson.core:jackson-annotations:2.9.0:jackson-annotations-2.9.0.jar:45d32ac61ef8a744b464c54c2b3414be571016dd46bfc2bec226761cf7ae457a',
-        'com.fasterxml.jackson.core:jackson-core:2.9.6:jackson-core-2.9.6.jar:fab8746aedd6427788ee390ea04d438ec141bff7eb3476f8bdd5d9110fb2718a',
-        'com.fasterxml.jackson.core:jackson-databind:2.9.6:jackson-databind-2.9.6.jar:657e3e979446d61f88432b9c50f0ccd9c1fe4f1c822d533f5572e4c0d172a125',
+        'com.fasterxml.jackson.core:jackson-core:2.9.7:jackson-core-2.9.7.jar:9e5bc0efabd9f0cac5c1fdd9ae35b16332ed22a0ee19a356de370a18a8cb6c84',
+        'com.fasterxml.jackson.core:jackson-databind:2.9.7:jackson-databind-2.9.7.jar:675376decfc070b039d2be773a97002f1ee1e1346d95bd99feee0d56683a92bf',
         'com.github.ajalt:clikt:1.5.0:clikt-1.5.0.jar:f13ab614cb0372229f6bb1e19aa98ee6f4ac96f253d0e72d482ee4f5fd2a13a9',
         'com.google.dagger:dagger-compiler:2.0.2:dagger-compiler-2.0.2.jar:b74bc9de063dd4c6400b232231f2ef5056145b8fbecbf5382012007dd1c071b3',
         'com.google.dagger:dagger-producers:2.0-beta:dagger-producers-2.0-beta.jar:99ec15e8a0507ba569e7655bc1165ee5e5ca5aa914b3c8f7e2c2458f724edd6b',
         'com.google.dagger:dagger:2.0.2:dagger-2.0.2.jar:84c0282ed8be73a29e0475d639da030b55dee72369e58dd35ae7d4fe6243dcf9',
         'com.google.guava:guava:18.0:guava-18.0.jar:d664fbfc03d2e5ce9cab2a44fb01f1d0bf9dfebeccc1a473b1f9ea31f79f6f99',
         'com.vaadin.external.google:android-json:0.0.20131108.vaadin1:android-json-0.0.20131108.vaadin1.jar:dfb7bae2f404cfe0b72b4d23944698cb716b7665171812a0a4d0f5926c0fac79',
-        'io.javalin:javalin:2.2.0:javalin-2.2.0.jar:f7298fa281400559e92f000477a631c75aca9e01776962fd4b392fdb3b714190',
-        'io.mockk:mockk-agent-api:1.8.6:mockk-agent-api-1.8.6.jar:613512c66538e6349e03df641a868f4ee324f13e2e1dbd67a0ed388aa664a444',
-        'io.mockk:mockk-agent-common:1.8.6:mockk-agent-common-1.8.6.jar:cb7cb26fae5bfd3c89090858548990f311b27f673b9efa9d0c94f97c463b2863',
-        'io.mockk:mockk-agent-jvm:1.8.6:mockk-agent-jvm-1.8.6.jar:3f30b98d23ada8b5a44d75b43cd58fc03252fcb96939ff31e7ad659818af1e5d',
-        'io.mockk:mockk-common:1.8.6:mockk-common-1.8.6.jar:a04b0e2fc7d583807cf89f3bbf5c7501808725e49e385d95486e1008d8ab2ba8',
-        'io.mockk:mockk-dsl-jvm:1.8.6:mockk-dsl-jvm-1.8.6.jar:c2c5df747ff04d1a3e02212b7b43f9ba4233597ae278928598275d7a7bb26d73',
-        'io.mockk:mockk-dsl:1.8.6:mockk-dsl-1.8.6.jar:f6014265fe88ef1290c936741bdd0a7c3d9ceba9ee3bd2a153d65b05e1fc7946',
-        'io.mockk:mockk:1.8.6:mockk-1.8.6.jar:0a200d71bab11facfe50637b1980f53c07a21bfa4dd9eb021ac8e8cc693924b2',
+        'io.javalin:javalin:2.3.0:javalin-2.3.0.jar:3571e83863e1f163854f1b2ee3cbfc1336fcbdfa595ec9c2ed8ab8bfa792e5f4',
+        'io.mockk:mockk-agent-api:1.8.9:mockk-agent-api-1.8.9.jar:8cbc0adc0f349f891d44ffdaba55c68271790ce9c33cc437d2be86a5af572d6c',
+        'io.mockk:mockk-agent-common:1.8.9:mockk-agent-common-1.8.9.jar:a67b8bb696f91023e4446e2c8594c652924a350422047c96f31031be2a8de54a',
+        'io.mockk:mockk-agent-jvm:1.8.9:mockk-agent-jvm-1.8.9.jar:4a8b83501e0fda6f79601e073c9e419dc649eeb8d18645ae0d60c64f1e671076',
+        'io.mockk:mockk-common:1.8.9:mockk-common-1.8.9.jar:a3fb4d3fa776dde4eab2cc49e5df68fa394064df47431e2add9fc2100f3a145f',
+        'io.mockk:mockk-dsl-jvm:1.8.9:mockk-dsl-jvm-1.8.9.jar:d6cfda3ba94b3fba2826c4554a33866a5559df9326fb28b559078fcb4508e60d',
+        'io.mockk:mockk-dsl:1.8.9:mockk-dsl-1.8.9.jar:e24f0de13e12227544a68dae13f4fae4dd376f5d1eac796d3f4594989c0f2e68',
+        'io.mockk:mockk:1.8.9:mockk-1.8.9.jar:9ead145f12b086af1d15eb4bf0fa5ccee02781b69937be6f77f47ac03100f526',
         'javax.inject:javax.inject:1:javax.inject-1.jar:91c77044a50c481636c32d916fd89c9118a72195390452c81065080f957de7ff',
         'javax.servlet:javax.servlet-api:3.1.0:javax.servlet-api-3.1.0.jar:af456b2dd41c4e82cf54f3e743bc678973d9fe35bd4d3071fa05c7e5333b8482',
-        'net.bytebuddy:byte-buddy-agent:1.8.8:byte-buddy-agent-1.8.8.jar:dc1a2dcefe72731fa89ae84e32231c74d545ccf8216c79865096e546f20c57e8',
-        'net.bytebuddy:byte-buddy:1.8.8:byte-buddy-1.8.8.jar:30aed1ae2ee5261b1d2f0e98ec3fcb40755c3f61b378089fb65d56098df1f16b',
+        'net.bytebuddy:byte-buddy-agent:1.8.22:byte-buddy-agent-1.8.22.jar:ebc20e83fbb13e7911e4c704c9548a4166d7e83922f80de700ae5c5c983943d5',
+        'net.bytebuddy:byte-buddy:1.8.22:byte-buddy-1.8.22.jar:d330d2ef290a2852bbaf06eab03bc93d24501599c8a836da9d946f82c48e276c',
         'org.apiguardian:apiguardian-api:1.0.0:apiguardian-api-1.0.0.jar:1f58b77470d8d147a0538d515347dd322f49a83b9e884b8970051160464b65b3',
         'org.eclipse.jetty.websocket:websocket-api:9.4.12.v20180830:websocket-api-9.4.12.v20180830.jar:6f7ecb42601058ffe4a6c19c5340cac3ebf0f83e2e252b457558f104238278e3',
         'org.eclipse.jetty.websocket:websocket-client:9.4.12.v20180830:websocket-client-9.4.12.v20180830.jar:97c6882c858a75776773eaccc01739757c4e9f60a51613878c1f2b2ba03d91af',
@@ -36,31 +36,30 @@ dependencyVerification {
         'org.eclipse.jetty:jetty-util:9.4.12.v20180830:jetty-util-9.4.12.v20180830.jar:60ad53e118a3e7d10418b155b9944d90b2e4e4c732e53ef4f419473288d3f48c',
         'org.eclipse.jetty:jetty-webapp:9.4.12.v20180830:jetty-webapp-9.4.12.v20180830.jar:5301e412a32bf7dddcfad458d952179597c61f8fd531c265873562725c3d4646',
         'org.eclipse.jetty:jetty-xml:9.4.12.v20180830:jetty-xml-9.4.12.v20180830.jar:5b8298ab3d43ddaf0941d41f51b82c8ae23a247da055fa161b752ab9495155ed',
-        'org.jetbrains.kotlin:kotlin-android-extensions:1.2.70:kotlin-android-extensions-1.2.70.jar:534601f4b10bd175268a611ea370051f75db3377da11e9400430f01db7c70bd0',
-        'org.jetbrains.kotlin:kotlin-annotation-processing-gradle:1.2.70:kotlin-annotation-processing-gradle-1.2.70.jar:820da7e3637066c14eb3d54dc29cd6d4dc4a041ff603d0b15844403de47b7d12',
-        'org.jetbrains.kotlin:kotlin-build-common:1.2.70:kotlin-build-common-1.2.70.jar:6756d98108512b8a42013e453912e868777a20f05cac3f40af891e4058e94da6',
-        'org.jetbrains.kotlin:kotlin-compiler-embeddable:1.2.70:kotlin-compiler-embeddable-1.2.70.jar:8958d6f6ce4e49a6cecaaa9a1711a6b03df793fe066a74d88cf4958f20b0f10d',
-        'org.jetbrains.kotlin:kotlin-compiler-runner:1.2.70:kotlin-compiler-runner-1.2.70.jar:44654c5f86e2b36222cb8b09e5eeb0b252db1e83d258b27fb31c670c339e65e1',
-        'org.jetbrains.kotlin:kotlin-daemon-client:1.2.70:kotlin-daemon-client-1.2.70.jar:92b73c45670324ae6b81ccaa123a38eddd53adfe3a2b58938421d4d17a53f9e3',
-        'org.jetbrains.kotlin:kotlin-gradle-plugin-api:1.2.70:kotlin-gradle-plugin-api-1.2.70.jar:a60b71d564795461e023956d8b3dd03d606d51ad1eb79e7c002dbce62a24378c',
-        'org.jetbrains.kotlin:kotlin-gradle-plugin-model:1.2.70:kotlin-gradle-plugin-model-1.2.70.jar:a7fdb4b35e7537ad417e6b19595a1df7d676e8e9fa5a8a96dbcf1a40b577493b',
-        'org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.70:kotlin-gradle-plugin-1.2.70.jar:b9a96b3d39215b7fdcc8013476e70f86b8010277dd3639e58b42e6ffde1f3cab',
-        'org.jetbrains.kotlin:kotlin-reflect:1.2.41:kotlin-reflect-1.2.41.jar:1bab75771dfa2bb5949cd383ceaedf6f8d354fa0d677804fc5a39e320bab70d3',
-        'org.jetbrains.kotlin:kotlin-reflect:1.2.70:kotlin-reflect-1.2.70.jar:89ef46a458c5ee58b8460d0d22b0bb484eea0589ccffd59d650ef38bcb60e806',
-        'org.jetbrains.kotlin:kotlin-script-runtime:1.2.70:kotlin-script-runtime-1.2.70.jar:0124dfcf890e39250c3a4481cdd27f038d8321e93ce983730c4cbc10143eadc2',
-        'org.jetbrains.kotlin:kotlin-scripting-compiler-embeddable:1.2.70:kotlin-scripting-compiler-embeddable-1.2.70.jar:cbd88e1cae3f8f2baeb7021d3b76323b30e82663e7b4222a214f33ee314b3653',
-        'org.jetbrains.kotlin:kotlin-stdlib-common:1.2.70:kotlin-stdlib-common-1.2.70.jar:bb6898bef18e1de5d416d5135ca70dcac6645718c7d84bbddcfeb76ed1c199a1',
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