diff --git a/build.gradle b/build.gradle
index d1742da5b..8a162573f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -107,11 +107,11 @@ subprojects { project ->
     signature 'net.sf.androidscents.signature:android-api-level-21:5.0.1_r2@signature'
     signature 'org.codehaus.mojo.signature:java18:1.0@signature'
   }
-  
+
   spotless {
     kotlin {
       target "**/*.kt"
-      ktlint(versions.ktlint).userData(['indent_size': '2', 'continuation_indent_size' : '2'])
+      ktlint(versions.ktlint).userData(['indent_size': '2', 'continuation_indent_size': '2'])
     }
   }
 
@@ -159,9 +159,9 @@ subprojects { project ->
   // We have to set the dokka configuration after evaluation since the com.vanniktech.maven.publish
   // plugin overwrites our dokka configuration on projects where it's applied.
   afterEvaluate { p ->
-      p.tasks.dokka {
-        reportUndocumented = false
-        skipDeprecated = true
+    p.tasks.dokka {
+      reportUndocumented = false
+      skipDeprecated = true
       jdkVersion = 8
       packageOptions {
         prefix = "okhttp3.internal"
diff --git a/deploy_website.sh b/deploy_website.sh
index 106ddb519..688732fd0 100755
--- a/deploy_website.sh
+++ b/deploy_website.sh
@@ -21,11 +21,23 @@ git clone $REPO $DIR
 cd $DIR
 
 # Generate the API docs
-./gradlew :okhttp:dokka
+./gradlew \
+  :mockwebserver:dokka \
+  :okhttp-dnsoverhttps:dokka \
+  :okhttp-logging-interceptor:dokka \
+  :okhttp-sse:dokka \
+  :okhttp-tls:dokka \
+  :okhttp-urlconnection:dokka \
+  :okhttp:dokka
 
 # Build the site and push the new files up to GitHub
 mkdocs gh-deploy
 
+# Restore Javadocs from 1.x, 2.x, and 3.x.
+git checkout gh-pages
+git cherry-pick bb229b9dcc9a21a73edbf8d936bea88f52e0a3ff
+git push
+
 # Delete our temp folder
 cd ..
 rm -rf $DIR
diff --git a/mkdocs.yml b/mkdocs.yml
index 05bfd4085..d643e9524 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -47,4 +47,20 @@ nav:
   - 'Upgrading to OkHttp 4': upgrading_to_okhttp_4.md
   - 'Works with OkHttp': works_with_okhttp.md
   - 'Stack Overflow': https://stackoverflow.com/questions/tagged/okhttp?sort=active
-  - 'API Docs': api/okhttp/okhttp3/index.md
+  - '4.x API':
+    - 'okhttp': api/okhttp/okhttp3/index.md
+    - 'dnsoverhttps': api/okhttp-dnsoverhttps/okhttp3.dnsoverhttps/index.md
+    - 'logging-interceptor': api/okhttp-logging-interceptor/okhttp3.logging/index.md
+    - 'sse': api/okhttp-sse/okhttp3.sse/index.md
+    - 'tls': api/okhttp-tls/okhttp3.tls/index.md
+    - 'urlconnection': api/okhttp-urlconnection/okhttp3/index.md
+    - 'mockwebserver': api/mockwebserver/okhttp3.mockwebserver/index.md
+  - '3.x API':
+    - 'okhttp': https://square.github.io/okhttp/3.x/okhttp/
+    - 'dnsoverhttps': https://square.github.io/okhttp/3.x/okhttp-dnsoverhttps/
+    - 'logging-interceptor': https://square.github.io/okhttp/3.x/logging-interceptor/
+    - 'sse': https://square.github.io/okhttp/3.x/okhttp-sse/
+    - 'tls': https://square.github.io/okhttp/3.x/okhttp-tls/
+    - 'urlconnection': https://square.github.io/okhttp/3.x/okhttp-urlconnection/
+    - 'mockwebserver': https://square.github.io/okhttp/3.x/mockwebserver/
+
diff --git a/mockwebserver/build.gradle b/mockwebserver/build.gradle
index bf6bddde2..78644e927 100644
--- a/mockwebserver/build.gradle
+++ b/mockwebserver/build.gradle
@@ -16,6 +16,13 @@ dependencies {
   testImplementation deps.assertj
 }
 
+afterEvaluate { project ->
+  project.tasks.dokka {
+    outputDirectory = "$rootDir/docs/api"
+    outputFormat = 'gfm'
+  }
+}
+
 task japicmp(type: me.champeau.gradle.japicmp.JapicmpTask, dependsOn: 'jar') {
   oldClasspath = files(baselineJar(project, baselineVersion))
   newClasspath = files(jar.archivePath)
diff --git a/okhttp-dnsoverhttps/build.gradle b/okhttp-dnsoverhttps/build.gradle
index 1a9f10409..be16589de 100644
--- a/okhttp-dnsoverhttps/build.gradle
+++ b/okhttp-dnsoverhttps/build.gradle
@@ -16,3 +16,10 @@ dependencies {
   testImplementation deps.junit
   testImplementation deps.assertj
 }
+
+afterEvaluate { project ->
+  project.tasks.dokka {
+    outputDirectory = "$rootDir/docs/api"
+    outputFormat = 'gfm'
+  }
+}
diff --git a/okhttp-logging-interceptor/build.gradle b/okhttp-logging-interceptor/build.gradle
index 538190388..b96034803 100644
--- a/okhttp-logging-interceptor/build.gradle
+++ b/okhttp-logging-interceptor/build.gradle
@@ -19,6 +19,13 @@ dependencies {
   testImplementation deps.assertj
 }
 
+afterEvaluate { project ->
+  project.tasks.dokka {
+    outputDirectory = "$rootDir/docs/api"
+    outputFormat = 'gfm'
+  }
+}
+
 task japicmp(type: me.champeau.gradle.japicmp.JapicmpTask, dependsOn: 'jar') {
   oldClasspath = files(baselineJar(project, baselineVersion))
   newClasspath = files(jar.archivePath)
diff --git a/okhttp-sse/build.gradle b/okhttp-sse/build.gradle
index a6a478907..594eb2c1d 100644
--- a/okhttp-sse/build.gradle
+++ b/okhttp-sse/build.gradle
@@ -18,6 +18,13 @@ dependencies {
   testCompileOnly deps.jsr305
 }
 
+afterEvaluate { project ->
+  project.tasks.dokka {
+    outputDirectory = "$rootDir/docs/api"
+    outputFormat = 'gfm'
+  }
+}
+
 task japicmp(type: me.champeau.gradle.japicmp.JapicmpTask, dependsOn: 'jar') {
   oldClasspath = files(baselineJar(project, baselineVersion))
   newClasspath = files(jar.archivePath)
diff --git a/okhttp-tls/build.gradle b/okhttp-tls/build.gradle
index 3ea56bc9e..a0d9194d6 100644
--- a/okhttp-tls/build.gradle
+++ b/okhttp-tls/build.gradle
@@ -18,6 +18,13 @@ dependencies {
   testImplementation deps.assertj
 }
 
+afterEvaluate { project ->
+  project.tasks.dokka {
+    outputDirectory = "$rootDir/docs/api"
+    outputFormat = 'gfm'
+  }
+}
+
 task japicmp(type: me.champeau.gradle.japicmp.JapicmpTask, dependsOn: 'jar') {
   oldClasspath = files(baselineJar(project, baselineVersion))
   newClasspath = files(jar.archivePath)
diff --git a/okhttp-urlconnection/build.gradle b/okhttp-urlconnection/build.gradle
index 4b997f571..e94507e0c 100644
--- a/okhttp-urlconnection/build.gradle
+++ b/okhttp-urlconnection/build.gradle
@@ -19,6 +19,13 @@ dependencies {
   testImplementation deps.assertj
 }
 
+afterEvaluate { project ->
+  project.tasks.dokka {
+    outputDirectory = "$rootDir/docs/api"
+    outputFormat = 'gfm'
+  }
+}
+
 task japicmp(type: me.champeau.gradle.japicmp.JapicmpTask, dependsOn: 'jar') {
   oldClasspath = files(baselineJar(project, baselineVersion))
   newClasspath = files(jar.archivePath)