diff --git a/extern/amrex b/extern/amrex
index 9c256b12b..cf8d9f8e2 160000
--- a/extern/amrex
+++ b/extern/amrex
@@ -1 +1 @@
-Subproject commit 9c256b12b89f86b30fe1a6f03dd79db351d56fb3
+Subproject commit cf8d9f8e233be2ac68aeb65a95e992adfb483939
diff --git a/extern/fmt b/extern/fmt
index e4c8cfe38..8a4bec5cf 160000
--- a/extern/fmt
+++ b/extern/fmt
@@ -1 +1 @@
-Subproject commit e4c8cfe38ed3ae595aab58460f543c2f23a7f670
+Subproject commit 8a4bec5cf53387356738a06ba0cf4fdf086241ae