diff --git a/repertory/librepertory/src/initialize.cpp b/repertory/librepertory/src/initialize.cpp
index e8828e69..28abef78 100644
--- a/repertory/librepertory/src/initialize.cpp
+++ b/repertory/librepertory/src/initialize.cpp
@@ -28,6 +28,8 @@
 #endif // defined(PROJECT_ENABLE_OPENSSL)
 
 #if defined(PROJECT_REQUIRE_ALPINE) && !defined(PROJECT_IS_MINGW)
+#include <filesystem>
+#include <stdlib.h>
 #include <pthread.h>
 #endif // defined(PROJECT_REQUIRE_ALPINE) && !defined (PROJECT_IS_MINGW)
 
@@ -52,6 +54,12 @@ auto project_initialize() -> bool {
     pthread_attr_setstacksize(&attr, stack_size);
     pthread_attr_setguardsize(&attr, guard_size);
     pthread_setattr_default_np(&attr);
+
+    const auto icu_dir =
+        std::filesystem::absolute(std::filesystem::path{"./icu"})
+            .lexically_normal()
+            .string();
+    setenv("ICU_DATA", icu_dir.c_str(), 1);
   }
 #endif // defined(PROJECT_REQUIRE_ALPINE) && !defined (PROJECT_IS_MINGW)