diff --git a/.gitignore b/.gitignore
index 30bb64c0..bd4afd64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,7 @@
 bin/
 cmakebuild/
 cmake-*/
-*build*/
+build*/
 CMakeFiles/
 *.xcodeproj
 .vscode/**
diff --git a/appveyor.yml b/appveyor.yml
index 48a06e6d..b181162b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -4,6 +4,11 @@ platform:
 - x64
 
 version: 1.0.{build}
+install:
+- ps: Invoke-WebRequest 'https://github.com/embree/embree/releases/download/v3.12.1/embree-3.12.1.x64.vc14.windows.zip' -OutFile 'embree64.zip'
+- ps: 7z x embree64.zip -oc:\
+- ps: Invoke-WebRequest 'https://github.com/oneapi-src/oneTBB/releases/download/v2020.2/tbb-2020.2-win.zip' -OutFile 'tbb.zip'
+- ps: 7z x tbb.zip -oc:\
 build_script:
 - cmd: powershell .\build-appveyor.ps1
 artifacts:
diff --git a/build-appveyor.ps1 b/build-appveyor.ps1
index f87c4e88..b76e1b7d 100644
--- a/build-appveyor.ps1
+++ b/build-appveyor.ps1
@@ -1,10 +1,3 @@
-# Download embree and tbb
-# Seems like TBB dropped Windows 8.1 support in version 2020 so we'll use older versions
-Invoke-WebRequest 'https://github.com/embree/embree/releases/download/v3.9.0/embree-3.9.0.x64.vc14.windows.zip' -OutFile 'embree64.zip'
-7z x embree64.zip -oc:\
-Invoke-WebRequest 'https://github.com/oneapi-src/oneTBB/releases/download/2019_U9/tbb2019_20191006oss_win.zip' -OutFile 'tbb.zip'
-7z x tbb.zip -oc:\
-
 git submodule update --init --recursive
 
 $env:Path += ";C:\cygwin64\bin"
@@ -25,7 +18,7 @@ mkdir cmakebuild
 
 cd cmakebuild
 
-cmake .. -T v143 -Dembree_DIR="C:\embree-3.9.0.x64.vc14.windows" -DTBB_DIR="C:\tbb2019_20191006oss\cmake" -DCMAKE_GENERATOR_PLATFORM=x64 -DLEGACY_EMBREE=YES
+cmake .. -T v143 -Dembree_DIR="C:\embree-3.12.1.x64.vc14.windows" -DTBB_DIR="C:\tbb\cmake" -DCMAKE_GENERATOR_PLATFORM=x64 -DENABLE_LIGHTPREVIEW=NO -DQt5Widgets_DIR="C:\Qt\5.8\msvc2013_64\lib\cmake\Qt5Widgets"
 
 $cmakePlatform = "x64"
 
diff --git a/build-windows.ps1 b/build-windows.ps1
index 0df041fa..ecc6d24b 100644
--- a/build-windows.ps1
+++ b/build-windows.ps1
@@ -1,8 +1,7 @@
 # Download embree and tbb
-# Seems like TBB dropped Windows 8.1 support in version 2020 so we'll use older versions
-Invoke-WebRequest 'https://github.com/embree/embree/releases/download/v3.9.0/embree-3.9.0.x64.vc14.windows.zip' -OutFile 'embree64.zip'
+Invoke-WebRequest 'https://github.com/embree/embree/releases/download/v3.12.1/embree-3.12.1.x64.vc14.windows.zip' -OutFile 'embree64.zip'
 7z x embree64.zip -oc:\
-Invoke-WebRequest 'https://github.com/oneapi-src/oneTBB/releases/download/2019_U9/tbb2019_20191006oss_win.zip' -OutFile 'tbb.zip'
+Invoke-WebRequest 'https://github.com/oneapi-src/oneTBB/releases/download/v2020.2/tbb-2020.2-win.zip' -OutFile 'tbb.zip'
 7z x tbb.zip -oc:\
 
 git submodule update --init --recursive
@@ -21,7 +20,7 @@ choco install ninja
 mkdir build-windows
 cd build-windows
 
-cmake .. -GNinja -Dembree_DIR="C:\embree-3.9.0.x64.vc14.windows" -DTBB_DIR="C:\tbb2019_20191006oss\cmake" -DCMAKE_BUILD_TYPE=Release -DLEGACY_EMBREE=YES
+cmake .. -GNinja -Dembree_DIR="C:\embree-3.12.1.x64.vc14.windows" -DTBB_DIR="C:\tbb\cmake" -DCMAKE_BUILD_TYPE=Release
 
 ninja
 if ( $? -eq $false ) {
diff --git a/light/CMakeLists.txt b/light/CMakeLists.txt
index 3211505b..6615a83e 100644
--- a/light/CMakeLists.txt
+++ b/light/CMakeLists.txt
@@ -45,12 +45,7 @@ add_executable(light main.cc)
 target_link_libraries(light PRIVATE common liblight)
 
 if (embree_FOUND)
-	if (LEGACY_EMBREE)
-		target_link_libraries (liblight PRIVATE ${EMBREE_LIBRARY})
-	else()
-		target_link_libraries (liblight PRIVATE embree)
-	endif()
-
+	target_link_libraries (liblight PRIVATE embree)
 	add_definitions(-DHAVE_EMBREE)
 
 	# macOS/homebrew: hack around find_file applying the .. before resolving the symlink
@@ -79,19 +74,11 @@ if (embree_FOUND)
 	endif()
 
 	add_custom_command(TARGET light POST_BUILD
+                       COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:embree>"   "$<TARGET_FILE_DIR:light>"
                        COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:TBB::tbb>" "$<TARGET_FILE_DIR:light>"
 					   COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:TBB::tbbmalloc>" "$<TARGET_FILE_DIR:light>"
 					   )
 
-	if (LEGACY_EMBREE)
-		add_custom_command(TARGET light POST_BUILD
-							COMMAND ${CMAKE_COMMAND} -E copy_if_different "${embree_DIR}/bin/embree3.dll"   "$<TARGET_FILE_DIR:light>")
-	else()
-		add_custom_command(TARGET light POST_BUILD
-							COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:embree>"   "$<TARGET_FILE_DIR:light>")
-	endif()
-
-
 	if (NOT EMBREE_LICENSE STREQUAL EMBREE_LICENSE-NOTFOUND)
 		add_custom_command(TARGET light POST_BUILD
                        COMMAND ${CMAKE_COMMAND} -E copy_if_different "${EMBREE_LICENSE}"       "$<TARGET_FILE_DIR:light>/LICENSE-embree.txt")
@@ -107,11 +94,7 @@ if (embree_FOUND)
 			COMMAND bash ARGS -c \"install_name_tool -add_rpath @loader_path $<TARGET_FILE:light> || true\")
 	endif()
 	
-	if (LEGACY_EMBREE)
-		install(FILES "${embree_DIR}/bin/embree3.dll" DESTINATION bin)
-	else()
-		install(FILES $<TARGET_FILE:embree> DESTINATION bin)
-	endif()
+	install(FILES $<TARGET_FILE:embree> DESTINATION bin)
 
 	# install TBB
 	if(UNIX)
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 4295925a..14c453da 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -33,18 +33,10 @@ target_compile_definitions(tests PRIVATE DOCTEST_CONFIG_SUPER_FAST_ASSERTS)
 
 # HACK: copy .dll dependencies
 add_custom_command(TARGET tests POST_BUILD
+					COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:embree>"   "$<TARGET_FILE_DIR:tests>"
 					COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:TBB::tbb>" "$<TARGET_FILE_DIR:tests>"
 					COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:TBB::tbbmalloc>" "$<TARGET_FILE_DIR:tests>"
 					)
-
-if (LEGACY_EMBREE)
-	add_custom_command(TARGET tests POST_BUILD
-						COMMAND ${CMAKE_COMMAND} -E copy_if_different "${embree_DIR}/bin/embree3.dll"   "$<TARGET_FILE_DIR:tests>")
-else()
-	add_custom_command(TARGET tests POST_BUILD
-						COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:embree>"   "$<TARGET_FILE_DIR:tests>")
-endif()
-
 if (NOT EMBREE_TBB_DLL STREQUAL EMBREE_TBB_DLL-NOTFOUND)
 	add_custom_command(TARGET tests POST_BUILD
 					   COMMAND ${CMAKE_COMMAND} -E copy_if_different "${EMBREE_TBB_DLL}" "$<TARGET_FILE_DIR:tests>")