diff --git a/crosstool_ng_config/aarch64 b/crosstool_ng_config/aarch64
index f64630e..83b702c 100644
--- a/crosstool_ng_config/aarch64
+++ b/crosstool_ng_config/aarch64
@@ -7,3 +7,8 @@ CT_LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS=y
 CT_LIBC_NEWLIB_IO_C99FMT=y
 CT_LIBC_NEWLIB_IO_FLOAT=y
 CT_LIBC_NEWLIB_IO_LL=y
+
+# For Docker.
+CT_EXPERIMENTAL=y
+CT_ALLOW_BUILD_AS_ROOT=y
+CT_ALLOW_BUILD_AS_ROOT_SURE=y
diff --git a/crosstool_ng_config/arm b/crosstool_ng_config/arm
index 0d1ab0a..84869ff 100644
--- a/crosstool_ng_config/arm
+++ b/crosstool_ng_config/arm
@@ -10,3 +10,8 @@ CT_CC_LANG_CXX=y
 # Modifications.
 CT_DEBUG_GDB=y
 CT_GDB_CROSS_SIM=y
+
+# For Docker.
+CT_EXPERIMENTAL=y
+CT_ALLOW_BUILD_AS_ROOT=y
+CT_ALLOW_BUILD_AS_ROOT_SURE=y
diff --git a/download-dependencies b/download-dependencies
index 46574c3..0084d64 100755
--- a/download-dependencies
+++ b/download-dependencies
@@ -119,6 +119,7 @@ scons \
   if "$baremetal"; then
     pkgs="${pkgs} \
 docbook2x \
+help2man \
 libtool-bin \
 "
   fi