--- configure.ac.orig	2025-01-04 19:00:12 UTC
+++ configure.ac
@@ -127,7 +127,7 @@ AC_SUBST([BOOST_CFLAGS])
 # ========
 # Find icu
 # ========
-PKG_CHECK_MODULES([ICU], [icu-i18n])
+PKG_CHECK_MODULES([ICU], [icu-i18n icu-uc])
 AC_SUBST(ICU_CFLAGS)
 AC_SUBST(ICU_LIBS)
 
