diff --git a/src/ic_bundle.cmake b/src/ic_bundle.cmake
index 96edd94..dec0605 100644
--- a/src/ic_bundle.cmake
+++ b/src/ic_bundle.cmake
@@ -49,6 +49,8 @@ FULL_NAME <name>
 [EXTRA_FILES <file paths list>] default: [empty cmake list]
     A list of paths to extra build artifacts that should be bundled, example:
         EXTRA_FILES "${CMAKE_BINARY_DIR}/bootloader/zephyr/zephyr.hex"
+    Each file is copied as "${FULL_NAME}_<file name>", so the example above
+    would be bundled as "${FULL_NAME}_zephyr.hex".
 
 [DEPENDS <target>] default: ${PROJECT_NAME}
     The target to depend on for the bundle target.  For Zephyr projects, this
@@ -65,16 +67,20 @@ function(ic_bundle)
     )
     set(optional_keyword_args
         PREFIX
-        EXTRA_FILES
-        EXTRA_POSTFIXES
         DEPENDS
         BUNDLE_DIR
     )
+    set(multi_value_keyword_args
+        EXTRA_FILES
+        EXTRA_POSTFIXES
+    )
     list(APPEND keyword_args
         ${required_keyword_args}
         ${optional_keyword_args}
     )
-    cmake_parse_arguments(PARSE_ARGV 0 "" "" "${keyword_args}" "")
+    cmake_parse_arguments(
+        PARSE_ARGV 0 "" "" "${keyword_args}" "${multi_value_keyword_args}"
+    )
 
     if(_UNPARSED_ARGUMENTS)
         message(FATAL_ERROR "Unparsed arguments: ${_UNPARSED_ARGUMENTS}")
@@ -105,6 +111,18 @@ function(ic_bundle)
     foreach(extra_postfix ${_EXTRA_POSTFIXES})
         add_artifact("${extra_postfix}")
     endforeach()
+
+    foreach(extra_file ${_EXTRA_FILES})
+        cmake_path(GET extra_file FILENAME extra_file_name)
+        _add_artifact(artifact_list
+            bundle
+            "${_BUNDLE_DIR}"
+            "${extra_file}"
+            ""
+            "${_FULL_NAME}_${extra_file_name}"
+            "${_DEPENDS}"
+        )
+    endforeach()
     
     add_custom_command(
         OUTPUT "${_FULL_NAME}.zip"
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index b3f7f59..2268e1b 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -12,5 +12,6 @@ test_cmake_begin()
 
 include(test_ic_project.cmake)
 include(test_ic_bundle/minimal_args.cmake)
+include(test_ic_bundle_extra_args/extra_args.cmake)
 
 test_cmake_end()
diff --git a/tests/fixtures/ic_bundle/bootloader.hex b/tests/fixtures/ic_bundle/bootloader.hex
new file mode 100644
index 0000000..e69de29
diff --git a/tests/fixtures/ic_bundle/project.signed.bin b/tests/fixtures/ic_bundle/project.signed.bin
new file mode 100644
index 0000000..e69de29
diff --git a/tests/fixtures/ic_bundle/project.signed.hex b/tests/fixtures/ic_bundle/project.signed.hex
new file mode 100644
index 0000000..e69de29
diff --git a/tests/script.cmake b/tests/script.cmake
index 827e4a4..4a2c6d9 100644
--- a/tests/script.cmake
+++ b/tests/script.cmake
@@ -6,6 +6,10 @@
 # Build the examples since the tests check for build artifacts
 execute_process(COMMAND cmake "-B" "tests/test_ic_bundle/build" "-S" "tests/test_ic_bundle")
 execute_process(COMMAND cmake "--build" "tests/test_ic_bundle/build")
+execute_process(
+    COMMAND cmake "-B" "tests/test_ic_bundle_extra_args/build" "-S" "tests/test_ic_bundle_extra_args"
+)
+execute_process(COMMAND cmake "--build" "tests/test_ic_bundle_extra_args/build")
 
 # Run the tests
 execute_process(
diff --git a/tests/test_ic_bundle_extra_args/CMakeLists.txt b/tests/test_ic_bundle_extra_args/CMakeLists.txt
new file mode 100644
index 0000000..cd2aa2b
--- /dev/null
+++ b/tests/test_ic_bundle_extra_args/CMakeLists.txt
@@ -0,0 +1,21 @@
+# Copyright (c) 2026 Intercreate, Inc.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Authors: J.P. Hutchins <jp@intercreate.io>
+
+cmake_minimum_required(VERSION 3.20.0)
+project(create_the_ic_bundle_extra_args_build)
+
+include(${CMAKE_SOURCE_DIR}/../../ic.cmake)
+
+add_custom_target(test_ic_bundle_extra_args ALL)
+
+set(FULL_NAME "client_project_board@rev_1.0.0_123456")
+
+ic_bundle(
+    FULL_NAME "${FULL_NAME}"
+    PREFIX ${CMAKE_SOURCE_DIR}/../fixtures/ic_bundle/project
+    EXTRA_POSTFIXES .signed.bin .signed.hex
+    EXTRA_FILES ${CMAKE_SOURCE_DIR}/../fixtures/ic_bundle/bootloader.hex
+    DEPENDS test_ic_bundle_extra_args
+)
diff --git a/tests/test_ic_bundle_extra_args/extra_args.cmake b/tests/test_ic_bundle_extra_args/extra_args.cmake
new file mode 100644
index 0000000..fa4b548
--- /dev/null
+++ b/tests/test_ic_bundle_extra_args/extra_args.cmake
@@ -0,0 +1,28 @@
+# Copyright (c) 2026 Intercreate, Inc.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Authors: J.P. Hutchins <jp@intercreate.io>
+
+test_cmake_group_begin("ic_bundle() EXTRA_POSTFIXES and EXTRA_FILES")
+
+set(FULL_NAME "client_project_board@rev_1.0.0_123456")
+
+set(BUNDLE_DIR "${CMAKE_CURRENT_LIST_DIR}/build/${FULL_NAME}")
+
+# More than one postfix, which a one-value keyword could not accept
+assert(EXISTS "${BUNDLE_DIR}/${FULL_NAME}.signed.bin")
+assert(EXISTS "${BUNDLE_DIR}/${FULL_NAME}.signed.hex")
+
+# A file from outside PREFIX, named after the bundle rather than its source
+assert(EXISTS "${BUNDLE_DIR}/${FULL_NAME}_bootloader.hex")
+assert(NOT EXISTS "${BUNDLE_DIR}/bootloader.hex")
+
+# The default artifacts are still bundled alongside them
+assert(EXISTS "${BUNDLE_DIR}/${FULL_NAME}.elf")
+assert(EXISTS "${BUNDLE_DIR}/${FULL_NAME}.bin")
+assert(EXISTS "${BUNDLE_DIR}/${FULL_NAME}.hex")
+assert(EXISTS "${BUNDLE_DIR}/${FULL_NAME}.map")
+
+assert(EXISTS "${BUNDLE_DIR}.zip")
+
+test_cmake_group_end()