diff --git a/run_config.json b/run_config.json
index e57cec16..36921c22 100644
--- a/run_config.json
+++ b/run_config.json
@@ -27,7 +27,7 @@
     "prereq": {
       "name": "Get ICU4C 78",
       "version": "78.1",
-      "command": "bash ../executors/cpp/set_icu4c_binary.sh ../gh-cache icu4c-78.1-Ubuntu22.04-x64.tgz icu4c-78.1-src.tgz"
+      "command": "bash ../executors/cpp/set_icu4c_binary.sh ../gh-cache icu4c-78.1-Ubuntu22.04-x64.tgz icu4c-78.1-sources.tgz"
     },
     "run": {
       "icu_version": "icu78",
diff --git a/setup_macos.sh b/setup_macos.sh
index 022a1a4f..c941b3ed 100755
--- a/setup_macos.sh
+++ b/setup_macos.sh
@@ -10,10 +10,15 @@ if ! command -v brew >/dev/null 2>&1; then
 fi
 
 # Check if json-c is already installed via Homebrew
-if ! brew list json-c >/dev/null 2>&1; then
+if ! command -v json-c >/dev/null 2>&1; then
     brew install json-c
 fi
 
+# Check if Maven is already installed via Homebrew
+if ! command -v mvn >/dev/null 2>&1; then
+    brew install maven
+fi
+
 # Download ICU4C binaries if the cache directory doesn't exist
 if [[ ! -d gh-cache ]]
 then
@@ -34,7 +39,7 @@ if [[ ${error_code:-0} -ne 0 ]]
 then
     # On Mac, `enum` is a standard built-in library for Python 3.4+.
     # If this fails, the system Python is likely broken or too old, so we install a fresh python3.
-    if ! brew list python3 >/dev/null 2>&1; then
+    if ! command -v python3 >/dev/null 2>&1; then
         brew install python3
     fi
 fi
@@ -112,6 +117,13 @@ function download_77_1() {
   fi
 }
 
+function download_78_1() {
+  if [[ ! -f icu4c-78.1-sources.tgz ]]
+  then
+    curl -L -O https://github.com/unicode-org/icu/releases/download/release-78.1/icu4c-78.1-sources.tgz
+  fi
+}
+
 pushd gh-cache
 
 download_71_1
@@ -122,5 +134,6 @@ download_74_2
 download_75_1
 download_76_1
 download_77_1
+download_78_1
 
 popd
\ No newline at end of file