diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7b70951..ee24cb8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,27 @@
 cmake_minimum_required(VERSION 3.21)
 
-file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/translations DESTINATION ${CMAKE_SOURCE_DIR}/resources)
\ No newline at end of file
+function(setup_translations target)
+    if (DEFINED ENV{ECLIPSE_TRANSLATIONS_REPO_PATH})
+        set(TRANSLATIONS_PATH $ENV{ECLIPSE_TRANSLATIONS_REPO_PATH})
+    else()
+        set(TRANSLATIONS_PATH ${CMAKE_CURRENT_BINARY_DIR}/eclipse-translations)
+    endif()
+
+    # Refresh translations on every build
+    add_custom_command(
+        TARGET ${target} POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy_directory
+        ${TRANSLATIONS_PATH}/translations
+        ${CMAKE_SOURCE_DIR}/resources/translations
+        COMMENT "Copying translations..."
+    )
+
+    # If using a local repo, set timestamp to a high value to disable translations updates
+    if (DEFINED ENV{ECLIPSE_TRANSLATIONS_REPO_PATH})
+        set(TRANSLATIONS_UNIX_TIMESTAMP 9999999999)
+    else()
+        string(TIMESTAMP TRANSLATIONS_UNIX_TIMESTAMP "%s" UTC)
+    endif()
+
+    target_compile_definitions(${target} PRIVATE ECLIPSE_TRANSLATION_TIMESTAMP=${TRANSLATIONS_UNIX_TIMESTAMP})
+endfunction()
\ No newline at end of file
diff --git a/README.md b/README.md
index 53a75ca..57ac051 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ Metadata is stored at the top of the file, and contains the following fields:
 ```json5
 {
     "language-name": "English",    // The name of the language in English
-    "language-code": "en",         // The language code (ISO 639-1)
+    "language-code": "en_US",      // The language code 
     "language-native": "English",  // The name of the language in its native language
     "language-charset": "default", // The character set of the language
     "language-fallback": "en",     // The fallback language code (defaults to English)
@@ -55,9 +55,9 @@ Supported values are:
 
 This will tell Eclipse which font to use for the language.
 
-`language-fallback` is optional and defaults to `en`.
+`language-fallback` is optional and defaults to `en_US`.
 If a translation is missing for a key in the current language,
 Eclipse will fall back to the specified language.
-You can use this to avoid duplicating translations for similar languages (e.g. `es` and `pt`).
+You can use this to avoid duplicating translations for similar languages.
 
 > Note: this field is not recursive, so if a translation is missing in the fallback language, it will not fall back further.
\ No newline at end of file
diff --git a/crowdin.yml b/crowdin.yml
index d7b03c2..3308cb4 100644
--- a/crowdin.yml
+++ b/crowdin.yml
@@ -1,5 +1,5 @@
 files:
-  - source: /translations/en.lang.json
+  - source: /translations/en_US.lang.json
     translation: /translations/%locale_with_underscore%.lang.json
 pull_request_title: Update translations
 commit_message: Update %language% translations
diff --git a/translations/en.lang.json b/translations/en_US.lang.json
similarity index 100%
rename from translations/en.lang.json
rename to translations/en_US.lang.json
diff --git a/translations/uk.lang.json b/translations/uk_UA.lang.json
similarity index 99%
rename from translations/uk.lang.json
rename to translations/uk_UA.lang.json
index f7a98a7..7581f32 100644
--- a/translations/uk.lang.json
+++ b/translations/uk_UA.lang.json
@@ -1,6 +1,6 @@
 {
     "language-name": "Ukrainian",
-    "language-code": "uk",
+    "language-code": "uk_UA",
     "language-native": "Українська",
     "language-charset": "cyrillic",
     "language-fallback": "en",