diff --git a/ports/icu/portfile.cmake b/ports/icu/portfile.cmake
index 8744c67000..5400227d4f 100644
--- a/ports/icu/portfile.cmake
+++ b/ports/icu/portfile.cmake
@@ -1,3 +1,18 @@
+if(NOT VCPKG_TARGET_IS_WINDOWS)
+    message(WARNING "${PORT} currently requires the following programs from the system package manager:
+    autoconf automake autoconf-archive
+On Debian and Ubuntu derivatives:
+    sudo apt-get install autoconf automake autoconf-archive
+On recent Red Hat and Fedora derivatives:
+    sudo dnf install autoconf automake autoconf-archive
+On Arch Linux and derivatives:
+    sudo pacman -S autoconf automake autoconf-archive
+On Alpine:
+    apk add autoconf automake autoconf-archive
+On macOS:
+    brew install autoconf automake autoconf-archive\n")
+endif()
+
 string(REGEX MATCH "^[0-9]*" ICU_VERSION_MAJOR "${VERSION}")
 string(REPLACE "." "_" VERSION2 "${VERSION}")
 string(REPLACE "." "-" VERSION3 "${VERSION}")
diff --git a/ports/icu/vcpkg.json b/ports/icu/vcpkg.json
index 1e9e284c1e..8b7e3de342 100644
--- a/ports/icu/vcpkg.json
+++ b/ports/icu/vcpkg.json
@@ -1,7 +1,7 @@
 {
   "name": "icu",
   "version": "74.2",
-  "port-version": 1,
+  "port-version": 2,
   "description": "Mature and widely used Unicode and localization library.",
   "homepage": "https://icu.unicode.org/home",
   "license": "ICU",
diff --git a/versions/baseline.json b/versions/baseline.json
index 11ca0bc460..82234b1e6a 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -3474,7 +3474,7 @@
     },
     "icu": {
       "baseline": "74.2",
-      "port-version": 1
+      "port-version": 2
     },
     "ideviceinstaller": {
       "baseline": "2023-07-21",
diff --git a/versions/i-/icu.json b/versions/i-/icu.json
index 9bfa49599c..acf5fcb076 100644
--- a/versions/i-/icu.json
+++ b/versions/i-/icu.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "a36199768fe1f9676b61d5d28ed9ac36c9f041c0",
+      "version": "74.2",
+      "port-version": 2
+    },
     {
       "git-tree": "dd30ff59dbfac290a1547dccc5ba44646fffa018",
       "version": "74.2",