diff --git a/AK/String.cpp b/AK/String.cpp
index 89e17ce471b..6d5ca976274 100644
--- a/AK/String.cpp
+++ b/AK/String.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/FlyString.h>
 #include <AK/Format.h>
 #include <AK/Memory.h>
diff --git a/AK/StringBuilder.cpp b/AK/StringBuilder.cpp
index 5d317716b46..9f2b8f8be03 100644
--- a/AK/StringBuilder.cpp
+++ b/AK/StringBuilder.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/Memory.h>
 #include <AK/PrintfImplementation.h>
 #include <AK/StdLibExtras.h>
diff --git a/Applications/Spreadsheet/Spreadsheet.cpp b/Applications/Spreadsheet/Spreadsheet.cpp
index d4d6dea1bb0..d31ab7eae41 100644
--- a/Applications/Spreadsheet/Spreadsheet.cpp
+++ b/Applications/Spreadsheet/Spreadsheet.cpp
@@ -27,6 +27,7 @@
 #include "Spreadsheet.h"
 #include "JSIntegration.h"
 #include "Workbook.h"
+#include <AK/ByteBuffer.h>
 #include <AK/GenericLexer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
diff --git a/Applications/Spreadsheet/Workbook.cpp b/Applications/Spreadsheet/Workbook.cpp
index 8fbe19dc1fb..a17b2eb5f34 100644
--- a/Applications/Spreadsheet/Workbook.cpp
+++ b/Applications/Spreadsheet/Workbook.cpp
@@ -26,6 +26,7 @@
 
 #include "Workbook.h"
 #include "JSIntegration.h"
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonObjectSerializer.h>
diff --git a/Applications/SystemMonitor/MemoryStatsWidget.cpp b/Applications/SystemMonitor/MemoryStatsWidget.cpp
index 4c32d6f8282..6009b60baeb 100644
--- a/Applications/SystemMonitor/MemoryStatsWidget.cpp
+++ b/Applications/SystemMonitor/MemoryStatsWidget.cpp
@@ -26,6 +26,7 @@
 
 #include "MemoryStatsWidget.h"
 #include "GraphWidget.h"
+#include <AK/ByteBuffer.h>
 #include <AK/JsonObject.h>
 #include <LibCore/File.h>
 #include <LibGUI/BoxLayout.h>
diff --git a/Applications/Welcome/main.cpp b/Applications/Welcome/main.cpp
index 1a7930d5da4..a754d4579ad 100644
--- a/Applications/Welcome/main.cpp
+++ b/Applications/Welcome/main.cpp
@@ -27,6 +27,7 @@
 #include "BackgroundWidget.h"
 #include "TextWidget.h"
 #include "UnuncheckableButton.h"
+#include <AK/ByteBuffer.h>
 #include <AK/Optional.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
diff --git a/DevTools/IPCCompiler/main.cpp b/DevTools/IPCCompiler/main.cpp
index fcb84153b34..fa55e94106f 100644
--- a/DevTools/IPCCompiler/main.cpp
+++ b/DevTools/IPCCompiler/main.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/Function.h>
 #include <AK/GenericLexer.h>
 #include <AK/HashMap.h>
diff --git a/Libraries/LibCore/Command.cpp b/Libraries/LibCore/Command.cpp
index 61ed2178f8f..e4fb7174736 100644
--- a/Libraries/LibCore/Command.cpp
+++ b/Libraries/LibCore/Command.cpp
@@ -25,6 +25,7 @@
  */
 
 #include "Command.h"
+#include <AK/ByteBuffer.h>
 #include <AK/LogStream.h>
 #include <AK/ScopeGuard.h>
 #include <LibCore/File.h>
diff --git a/Libraries/LibCore/ConfigFile.cpp b/Libraries/LibCore/ConfigFile.cpp
index c004a38dcb0..f4e1536436d 100644
--- a/Libraries/LibCore/ConfigFile.cpp
+++ b/Libraries/LibCore/ConfigFile.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/StringBuilder.h>
 #include <LibCore/ConfigFile.h>
 #include <LibCore/File.h>
diff --git a/Libraries/LibCore/EventLoop.cpp b/Libraries/LibCore/EventLoop.cpp
index ebd61b3a37e..e5b3b7428f3 100644
--- a/Libraries/LibCore/EventLoop.cpp
+++ b/Libraries/LibCore/EventLoop.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <AK/Badge.h>
+#include <AK/ByteBuffer.h>
 #include <AK/IDAllocator.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
diff --git a/Libraries/LibCore/FileStream.h b/Libraries/LibCore/FileStream.h
index e12520f87b6..c297e96333a 100644
--- a/Libraries/LibCore/FileStream.h
+++ b/Libraries/LibCore/FileStream.h
@@ -27,6 +27,7 @@
 #pragma once
 
 #include <AK/Buffered.h>
+#include <AK/ByteBuffer.h>
 #include <AK/Stream.h>
 #include <LibCore/File.h>
 
diff --git a/Libraries/LibCore/ProcessStatisticsReader.cpp b/Libraries/LibCore/ProcessStatisticsReader.cpp
index e13a27dcb48..69928d5b464 100644
--- a/Libraries/LibCore/ProcessStatisticsReader.cpp
+++ b/Libraries/LibCore/ProcessStatisticsReader.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
diff --git a/Libraries/LibKeyboard/CharacterMapFile.cpp b/Libraries/LibKeyboard/CharacterMapFile.cpp
index 40db21b025a..64af4cdc396 100644
--- a/Libraries/LibKeyboard/CharacterMapFile.cpp
+++ b/Libraries/LibKeyboard/CharacterMapFile.cpp
@@ -25,6 +25,7 @@
  */
 
 #include "CharacterMapFile.h"
+#include <AK/ByteBuffer.h>
 #include <AK/Utf8View.h>
 #include <LibCore/File.h>
 
diff --git a/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_cpp.cpp b/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_cpp.cpp
index 2ea10b0b870..2b7b2218c7e 100644
--- a/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_cpp.cpp
+++ b/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_cpp.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonObject.h>
 #include <AK/SourceGenerator.h>
 #include <AK/StringBuilder.h>
diff --git a/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_h.cpp b/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_h.cpp
index aa2b39921bb..e2f235db626 100644
--- a/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_h.cpp
+++ b/Libraries/LibWeb/CodeGenerators/Generate_CSS_PropertyID_h.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonObject.h>
 #include <AK/SourceGenerator.h>
 #include <AK/StringBuilder.h>
diff --git a/MenuApplets/ResourceGraph/main.cpp b/MenuApplets/ResourceGraph/main.cpp
index 3e33feb4499..cff7c7efaec 100644
--- a/MenuApplets/ResourceGraph/main.cpp
+++ b/MenuApplets/ResourceGraph/main.cpp
@@ -25,6 +25,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/CircularQueue.h>
 #include <AK/JsonObject.h>
 #include <LibCore/ArgsParser.h>
diff --git a/Services/LookupServer/LookupServer.cpp b/Services/LookupServer/LookupServer.cpp
index 7bf9beff40c..47608ec11a7 100644
--- a/Services/LookupServer/LookupServer.cpp
+++ b/Services/LookupServer/LookupServer.cpp
@@ -27,6 +27,7 @@
 #include "LookupServer.h"
 #include "DNSRequest.h"
 #include "DNSResponse.h"
+#include <AK/ByteBuffer.h>
 #include <AK/HashMap.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
diff --git a/Userland/arp.cpp b/Userland/arp.cpp
index 9f3149409a9..2be5ce7a261 100644
--- a/Userland/arp.cpp
+++ b/Userland/arp.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonObject.h>
 #include <AK/String.h>
 #include <LibCore/File.h>
diff --git a/Userland/df.cpp b/Userland/df.cpp
index a28fe8cb938..9852ff8bf47 100644
--- a/Userland/df.cpp
+++ b/Userland/df.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/NumberFormat.h>
diff --git a/Userland/gron.cpp b/Userland/gron.cpp
index f473fabbbc1..6532af0c25f 100644
--- a/Userland/gron.cpp
+++ b/Userland/gron.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
diff --git a/Userland/hexdump.cpp b/Userland/hexdump.cpp
index 82840d9ab8e..8d6dd3310b8 100644
--- a/Userland/hexdump.cpp
+++ b/Userland/hexdump.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/LogStream.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/File.h>
diff --git a/Userland/ifconfig.cpp b/Userland/ifconfig.cpp
index 8f858be1f0b..a2877632600 100644
--- a/Userland/ifconfig.cpp
+++ b/Userland/ifconfig.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/NumberFormat.h>
diff --git a/Userland/jp.cpp b/Userland/jp.cpp
index 92301e60851..8012ba4f965 100644
--- a/Userland/jp.cpp
+++ b/Userland/jp.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
diff --git a/Userland/lsirq.cpp b/Userland/lsirq.cpp
index 5273142363e..c2ce1800a5c 100644
--- a/Userland/lsirq.cpp
+++ b/Userland/lsirq.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/String.h>
diff --git a/Userland/lsof.cpp b/Userland/lsof.cpp
index 775955413f2..e4e387571df 100644
--- a/Userland/lsof.cpp
+++ b/Userland/lsof.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/GenericLexer.h>
 #include <AK/HashMap.h>
 #include <AK/JsonArray.h>
diff --git a/Userland/lspci.cpp b/Userland/lspci.cpp
index 1b16612a93b..7f754977d6b 100644
--- a/Userland/lspci.cpp
+++ b/Userland/lspci.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/String.h>
diff --git a/Userland/mount.cpp b/Userland/mount.cpp
index c5c0e8f0725..c01ccc0ec64 100644
--- a/Userland/mount.cpp
+++ b/Userland/mount.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
diff --git a/Userland/sysctl.cpp b/Userland/sysctl.cpp
index c4647ae3541..764271e6705 100644
--- a/Userland/sysctl.cpp
+++ b/Userland/sysctl.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <AK/Vector.h>
diff --git a/Userland/test-js.cpp b/Userland/test-js.cpp
index 42388a8d7a6..0619de9fff3 100644
--- a/Userland/test-js.cpp
+++ b/Userland/test-js.cpp
@@ -25,6 +25,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
 #include <AK/LexicalPath.h>
diff --git a/Userland/utmpupdate.cpp b/Userland/utmpupdate.cpp
index 04dff971aee..b7652c13aca 100644
--- a/Userland/utmpupdate.cpp
+++ b/Userland/utmpupdate.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
 #include <LibCore/ArgsParser.h>
diff --git a/Userland/w.cpp b/Userland/w.cpp
index e2f47423021..037f8b4f0ea 100644
--- a/Userland/w.cpp
+++ b/Userland/w.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ByteBuffer.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
 #include <LibCore/DateTime.h>