diff --git a/package/icu/icu.hash b/package/icu/icu.hash
index bf9451db8e..4f60681c54 100644
--- a/package/icu/icu.hash
+++ b/package/icu/icu.hash
@@ -1,3 +1,3 @@
 # Locally computed
-sha256  588e431f77327c39031ffbb8843c0e3bc122c211374485fa87dc5f3faff24061  icu4c-77_1-src.tgz
-sha256  451167c55c0fa447cc2d5632714f5e3c567fe4f1e1badefab2c1333852198aca  LICENSE
+sha256  6217f58ca39b23127605cfc6c7e0d3475fe4b0d63157011383d716cb41617886  icu4c-78.1-sources.tgz
+sha256  e55522d81edc687a341a4411e0776e54ca654e90147f354a90458aaced4116af  LICENSE
diff --git a/package/icu/icu.mk b/package/icu/icu.mk
index 4789edf0e2..a0b4388355 100644
--- a/package/icu/icu.mk
+++ b/package/icu/icu.mk
@@ -7,8 +7,8 @@
 # Git tags (and therefore versions on release-monitoring.org) use the
 # XX-Y format, but the tarballs are named XX_Y and the containing
 # directories XX.Y.
-ICU_VERSION = 77-1
-ICU_SOURCE = icu4c-$(subst -,_,$(ICU_VERSION))-src.tgz
+ICU_VERSION = 78.1
+ICU_SOURCE = icu4c-$(ICU_VERSION)-sources.tgz
 ICU_SITE = \
 	https://github.com/unicode-org/icu/releases/download/release-$(ICU_VERSION)
 ICU_LICENSE = ICU License