diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3de10ea2a..f17d8e6d3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -184,9 +184,9 @@ if(NOT EXISTS ${dfhack_SOURCE_DIR}/library/xml/codegen.pl OR NOT EXISTS ${dfhack
 endif()
 
 # set up versioning.
-set(DF_VERSION "0.47.04")
-set(DFHACK_RELEASE "r5")
-set(DFHACK_PRERELEASE FALSE)
+set(DF_VERSION "0.47.05")
+set(DFHACK_RELEASE "alpha0")
+set(DFHACK_PRERELEASE TRUE)
 
 set(DFHACK_VERSION "${DF_VERSION}-${DFHACK_RELEASE}")
 
diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 776a7de76..fd6c1c460 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -406,7 +406,10 @@ if(APPLE)
     set(ZIP_LIBRARY /usr/lib/libz.dylib)
     target_link_libraries(dfhack ${SDL_LIBRARY})
     target_link_libraries(dfhack ${CXX_LIBRARY})
-    target_link_libraries(dfhack ${ZIP_LIBRARY})
+    if(EXISTS ${ZIP_LIBRARY})
+        # doesn't exist on macOS 11, but DFHack seems to find the right library there
+        target_link_libraries(dfhack ${ZIP_LIBRARY})
+    endif()
     target_link_libraries(dfhack ncurses)
     set_target_properties(dfhack PROPERTIES VERSION 1.0.0)
     set_target_properties(dfhack PROPERTIES SOVERSION 1.0.0)
diff --git a/library/xml b/library/xml
index be0444cc1..b7222848d 160000
--- a/library/xml
+++ b/library/xml
@@ -1 +1 @@
-Subproject commit be0444cc165a1abff053d5893dc1f780f06526b7
+Subproject commit b7222848dbfd4391d8acafc926303bc4f6253d24