diff --git a/cmake/externals/steamworks/CMakeLists.txt b/cmake/externals/steamworks/CMakeLists.txt
index 47e5029206..4654a38d90 100644
--- a/cmake/externals/steamworks/CMakeLists.txt
+++ b/cmake/externals/steamworks/CMakeLists.txt
@@ -4,18 +4,82 @@ set(EXTERNAL_NAME steamworks)
 
 string(TOUPPER ${EXTERNAL_NAME} EXTERNAL_NAME_UPPER)
 
-set(STEAMWORKS_URL "${EXTERNAL_BUILD_ASSETS}/dependencies/steamworks_sdk_137.zip")
-set(STEAMWORKS_URL_MD5 "95ba9d0e3ddc04f8a8be17d2da806cbb")
+set(STEAMWORKS_URL "${EXTERNAL_BUILD_ASSETS}/dependencies/steamworks_sdk_158a.zip")
+set(STEAMWORKS_URL_SHA512 "fe906a7510a2125ab1441ad349e8bc31fafc9ab8130ec3843287e615a850305a8ed303e8d9e5bae4fee06024987834fb9f64c6c10d3da3784267a4906e59c831")
 
+# Ninja needs to know all the files that result from this upfront, so we need to tell it what files this is going
+# to generate with BUILD_BYPRODUCTS. We need to include all the files that are going to be referenced from elsewhere
+# in the build.
+#
+# This should include both libraries and headers, since from the point of view of the build, those are the outputs
+# of the project, even though we're not actually building anything here, and just unzipping an existing binary.
+#
+# I believe this list can't be obtained automatically from the compressed file, and needs to be generated by hand.
+# Steam SDK .zip has a sdk/ subdirectory, but for ExternalProject, this gets turned into project/src/steamworks.
+# So inside the SDK, sdk/redistributable_bin/steam_api.dll becomes project/src/steamworks/redistributable_bin/steam_api.dll
+# This can be seen under $BUILD_DIR/ext.
 ExternalProject_Add(
   ${EXTERNAL_NAME}
   URL ${STEAMWORKS_URL}
-  URL_MD5 ${STEAMWORKS_URL_MD5}
+  URL_HASH SHA512=${STEAMWORKS_URL_SHA512}
   CONFIGURE_COMMAND ""
   BUILD_COMMAND ""
   INSTALL_COMMAND ""
   LOG_DOWNLOAD 1
   DOWNLOAD_EXTRACT_TIMESTAMP 1
+  BUILD_BYPRODUCTS
+    "project/src/steamworks/redistributable_bin/win64/steam_api64.lib"
+    "project/src/steamworks/redistributable_bin/win64/steam_api64.dll"
+    "project/src/steamworks/redistributable_bin/osx/steam_api.dylib"
+    "project/src/steamworks/redistributable_bin/linux64/steam_api.so"
+    "project/src/steamworks/redistributable_bin/linux32/steam_api.so"
+    "project/src/steamworks/redistributable_bin/steam_api.lib"
+    "project/src/steamworks/redistributable_bin/steam_api.dll"
+    "project/src/steamworks/public/steam/isteamapplist.h"
+    "project/src/steamworks/public/steam/isteamapps.h"
+    "project/src/steamworks/public/steam/isteamappticket.h"
+    "project/src/steamworks/public/steam/isteamclient.h"
+    "project/src/steamworks/public/steam/isteamcontroller.h"
+    "project/src/steamworks/public/steam/isteamdualsense.h"
+    "project/src/steamworks/public/steam/isteamfriends.h"
+    "project/src/steamworks/public/steam/isteamgamecoordinator.h"
+    "project/src/steamworks/public/steam/isteamgameserver.h"
+    "project/src/steamworks/public/steam/isteamgameserverstats.h"
+    "project/src/steamworks/public/steam/isteamhtmlsurface.h"
+    "project/src/steamworks/public/steam/isteamhttp.h"
+    "project/src/steamworks/public/steam/isteaminput.h"
+    "project/src/steamworks/public/steam/isteaminventory.h"
+    "project/src/steamworks/public/steam/isteammatchmaking.h"
+    "project/src/steamworks/public/steam/isteammusic.h"
+    "project/src/steamworks/public/steam/isteammusicremote.h"
+    "project/src/steamworks/public/steam/isteamnetworking.h"
+    "project/src/steamworks/public/steam/isteamnetworkingmessages.h"
+    "project/src/steamworks/public/steam/isteamnetworkingsockets.h"
+    "project/src/steamworks/public/steam/isteamnetworkingutils.h"
+    "project/src/steamworks/public/steam/isteamparentalsettings.h"
+    "project/src/steamworks/public/steam/isteamps3overlayrenderer.h"
+    "project/src/steamworks/public/steam/isteamremoteplay.h"
+    "project/src/steamworks/public/steam/isteamremotestorage.h"
+    "project/src/steamworks/public/steam/isteamscreenshots.h"
+    "project/src/steamworks/public/steam/isteamugc.h"
+    "project/src/steamworks/public/steam/isteamuser.h"
+    "project/src/steamworks/public/steam/isteamuserstats.h"
+    "project/src/steamworks/public/steam/isteamutils.h"
+    "project/src/steamworks/public/steam/isteamvideo.h"
+    "project/src/steamworks/public/steam/matchmakingtypes.h"
+    "project/src/steamworks/public/steam/steam_api_common.h"
+    "project/src/steamworks/public/steam/steam_api_flat.h"
+    "project/src/steamworks/public/steam/steam_api.h"
+    "project/src/steamworks/public/steam/steam_api_internal.h"
+    "project/src/steamworks/public/steam/steamclientpublic.h"
+    "project/src/steamworks/public/steam/steamencryptedappticket.h"
+    "project/src/steamworks/public/steam/steam_gameserver.h"
+    "project/src/steamworks/public/steam/steamhttpenums.h"
+    "project/src/steamworks/public/steam/steamnetworkingfakeip.h"
+    "project/src/steamworks/public/steam/steamnetworkingtypes.h"
+    "project/src/steamworks/public/steam/steamps3params.h"
+    "project/src/steamworks/public/steam/steamtypes.h"
+    "project/src/steamworks/public/steam/steamuniverse.h"
 )
 
 set_target_properties(${EXTERNAL_NAME} PROPERTIES FOLDER "hidden/externals")