diff --git a/litex_boards/targets/alveo_u250.py b/litex_boards/targets/alveo_u250.py
index 1cd0a2be41294a2b6bdf7f1bdb3a5ed73709ba33..2dc1e4604c5ec0887b2ef12bae4f7518419717fd 100755
--- a/litex_boards/targets/alveo_u250.py
+++ b/litex_boards/targets/alveo_u250.py
@@ -11,6 +11,7 @@
 import argparse, os
 
 from migen import *
+from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex_boards.platforms import alveo_u250
 
diff --git a/litex_boards/targets/kcu105.py b/litex_boards/targets/kcu105.py
index 9668934a936e2a74816c6dc98bd00986b716448e..a2eacfaea6b4b61fb7ca0ae7da5e8e2721d4e9a7 100755
--- a/litex_boards/targets/kcu105.py
+++ b/litex_boards/targets/kcu105.py
@@ -10,6 +10,7 @@ import os
 import argparse
 
 from migen import *
+from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex_boards.platforms import kcu105
 
diff --git a/litex_boards/targets/mercury_xu5.py b/litex_boards/targets/mercury_xu5.py
index 8a774947448d61a24ffb2c61faa99a6d139c7d91..b300af807de0c81d11a8865aedba8db6c0ee9930 100755
--- a/litex_boards/targets/mercury_xu5.py
+++ b/litex_boards/targets/mercury_xu5.py
@@ -10,7 +10,7 @@ import os
 import argparse
 
 from migen import *
-from migen.genlib.io import CRG
+from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex_boards.platforms import mercury_xu5
 
diff --git a/litex_boards/targets/vcu118.py b/litex_boards/targets/vcu118.py
index c1deb573eb65267220ec62773f310223ca908da1..d63dabcccf8fa36ad167d47117e6abcf86e1e100 100755
--- a/litex_boards/targets/vcu118.py
+++ b/litex_boards/targets/vcu118.py
@@ -11,6 +11,7 @@ import os
 import argparse
 
 from migen import *
+from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex_boards.platforms import vcu118
 
diff --git a/litex_boards/targets/xcu1525.py b/litex_boards/targets/xcu1525.py
index dab99e537c1ed323aa5508f1d9dd29d077c71814..014b131007470a9ee3e46ab8c4105b6efda73663 100755
--- a/litex_boards/targets/xcu1525.py
+++ b/litex_boards/targets/xcu1525.py
@@ -10,6 +10,7 @@ import os
 import argparse
 
 from migen import *
+from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex_boards.platforms import xcu1525
 
diff --git a/litex_boards/targets/zcu104.py b/litex_boards/targets/zcu104.py
index 31878645a734ac37c40f1581e617ab40ee2c87c8..aa7a5e3a771787b3c401605187aff0f6ed215fa4 100755
--- a/litex_boards/targets/zcu104.py
+++ b/litex_boards/targets/zcu104.py
@@ -11,6 +11,7 @@ import os
 import argparse
 
 from migen import *
+from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex_boards.platforms import zcu104