diff --git a/recipes/boost/all/conanfile.py b/recipes/boost/all/conanfile.py
index ec5d845cf9f1e..fa3716e8872b5 100644
--- a/recipes/boost/all/conanfile.py
+++ b/recipes/boost/all/conanfile.py
@@ -370,10 +370,10 @@ def requirements(self):
         if self._with_lzma:
             self.requires("xz_utils/5.2.5")
         if self._with_zstd:
-            self.requires("zstd/1.4.5")
+            self.requires("zstd/1.4.8")
 
         if self._with_icu:
-            self.requires("icu/68.1")
+            self.requires("icu/68.2")
         elif self._with_iconv:
             self.requires("libiconv/1.16")
 
@@ -868,7 +868,10 @@ def add_defines(library):
         if tools.is_apple_os(self.settings.os):
             if self.settings.get_safe("os.version"):
                 cxx_flags.append(tools.apple_deployment_target_flag(self.settings.os,
-                                                                    self.settings.os.version))
+                                                                    self.settings.get_safe("os.version"),
+                                                                    self.settings.get_safe("os.sdk"),
+                                                                    self.settings.get_safe("os.subsystem"),
+                                                                    self.settings.get_safe("arch")))
 
         if self.settings.os == "iOS":
             if self.options.multithreading: