diff --git a/var/spack/repos/builtin/packages/icu4c/package.py b/var/spack/repos/builtin/packages/icu4c/package.py
index 9bec4f0692c018b169c955d32495a07b2f6956ce..29307a4522340a35bd9b1b5c1c0f01d06b9ad187 100644
--- a/var/spack/repos/builtin/packages/icu4c/package.py
+++ b/var/spack/repos/builtin/packages/icu4c/package.py
@@ -12,10 +12,9 @@ class Icu4c(AutotoolsPackage):
     C/C++ interface."""
 
     homepage = "http://site.icu-project.org/"
-    url      = "http://download.icu-project.org/files/icu4c/57.1/icu4c-57_1-src.tgz"
-    list_url = "http://download.icu-project.org/files/icu4c"
-    list_depth = 2
+    url      = "https://github.com/unicode-org/icu/releases/download/release-65-1/icu4c-65_1-src.tgz"
 
+    version('65.1', sha256='53e37466b3d6d6d01ead029e3567d873a43a5d1c668ed2278e253b683136d948')
     version('64.1', sha256='92f1b7b9d51b396679c17f35a2112423361b8da3c1b9de00aa94fd768ae296e6')
     version('60.1', sha256='f8f5a6c8fbf32c015a467972bdb1477dc5f5d5dfea908b6ed218715eeb5ee225')
     version('58.2', sha256='2b0a4410153a9b20de0e20c7d8b66049a72aef244b53683d0d7521371683da0c')
@@ -35,8 +34,12 @@ class Icu4c(AutotoolsPackage):
     configure_directory = 'source'
 
     def url_for_version(self, version):
-        url = "http://download.icu-project.org/files/icu4c/{0}/icu4c-{1}-src.tgz"
-        return url.format(version.dotted, version.underscored)
+        if version >= Version('65'):
+            url = "https://github.com/unicode-org/icu/releases/download/release-{0}/icu4c-{1}-src.tgz"
+            return url.format(version.dashed, version.underscored)
+        else:
+            url = "http://download.icu-project.org/files/icu4c/{0}/icu4c-{1}-src.tgz"
+            return url.format(version.dotted, version.underscored)
 
     def flag_handler(self, name, flags):
         if name == 'cxxflags':
@@ -47,6 +50,12 @@ def flag_handler(self, name, flags):
                              self.spec.variants['cxxstd'].value)))
         return (None, flags, None)
 
+    # Need to make sure that locale is UTF-8 in order to process source
+    # files in UTF-8.
+    @when('@59:')
+    def setup_build_environment(self, env):
+        env.set('LC_ALL', 'en_US.UTF-8')
+
     def configure_args(self):
         args = []