diff --git a/CMakeLists.txt b/CMakeLists.txt
index 674d9b60d..790e8f59b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -192,7 +192,7 @@ endif()
 
 # set up versioning.
 set(DF_VERSION "50.07")
-set(DFHACK_RELEASE "alpha3")
+set(DFHACK_RELEASE "beta1")
 set(DFHACK_PRERELEASE TRUE)
 
 set(DFHACK_VERSION "${DF_VERSION}-${DFHACK_RELEASE}")
diff --git a/docs/changelog.txt b/docs/changelog.txt
index 28f3ab904..0a5bfd1a1 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -35,6 +35,20 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 
 ## New Plugins
 
+## Fixes
+
+## Misc Improvements
+
+## Documentation
+
+## API
+
+## Lua
+
+## Removed
+
+# 50.07-beta1
+
 ## Fixes
 -@ `buildingplan`: items are now attached correctly to screw pumps and other multi-item buildings
 -@ `buildingplan`: buildings with different material filters will no longer get "stuck" if one of the filters currently matches no items
@@ -53,12 +67,6 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 - player-created blueprints should now go in the ``dfhack-config/blueprints`` folder. please move your existing blueprints from ``blueprints`` to ``dfhack-config/blueprints``. you don't need to move the library blueprints -- those can be safely deleted from the old ``blueprints`` directory.
 -@ `showmood`: clarify how many bars and/or cloth items are actually needed for the mood
 
-## Documentation
-
-## API
-
-## Lua
-
 ## Removed
 -@ `buildingplan`: "heat safety" setting is temporarily removed while we investigate incorrect item matching
 
diff --git a/library/xml b/library/xml
index 13514f507..dbba09514 160000
--- a/library/xml
+++ b/library/xml
@@ -1 +1 @@
-Subproject commit 13514f507b39dc256490d7b387331016e4e2b89f
+Subproject commit dbba095144e631b111d793aae0af2601fffe8e96
diff --git a/scripts b/scripts
index 21aceeb24..cffac20a4 160000
--- a/scripts
+++ b/scripts
@@ -1 +1 @@
-Subproject commit 21aceeb241df6ddfb6b276bb64ff6512842c2115
+Subproject commit cffac20a47c80c73d9084cb1eac0a0063a042f6f