diff --git a/pygoscelis-config b/pygoscelis-config
index 16aa2cd..885068d 100644
--- a/pygoscelis-config
+++ b/pygoscelis-config
@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 5.3.8 Kernel Configuration
+# Linux/x86 5.3.9 Kernel Configuration
 #
 
 #
@@ -119,12 +119,17 @@ CONFIG_CPU_ISOLATION=y
 # RCU Subsystem
 #
 CONFIG_PREEMPT_RCU=y
-# CONFIG_RCU_EXPERT is not set
+CONFIG_RCU_EXPERT=y
 CONFIG_SRCU=y
 CONFIG_TREE_SRCU=y
 CONFIG_TASKS_RCU=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RCU_NEED_SEGCBLIST=y
+CONFIG_RCU_FANOUT=4
+CONFIG_RCU_FANOUT_LEAF=8
+CONFIG_RCU_FAST_NO_HZ=y
+CONFIG_RCU_BOOST=y
+CONFIG_RCU_BOOST_DELAY=500
 CONFIG_RCU_NOCB_CPU=y
 # end of RCU Subsystem
 
@@ -744,7 +749,6 @@ CONFIG_ARCH_MMAP_RND_COMPAT_BITS=16
 CONFIG_HAVE_ARCH_COMPAT_MMAP_BASES=y
 CONFIG_HAVE_COPY_THREAD_TLS=y
 CONFIG_HAVE_STACK_VALIDATION=y
-CONFIG_HAVE_RELIABLE_STACKTRACE=y
 CONFIG_OLD_SIGSUSPEND3=y
 CONFIG_COMPAT_OLD_SIGACTION=y
 CONFIG_64BIT_TIME=y
@@ -5541,9 +5545,9 @@ CONFIG_IO_DELAY_NONE=y
 # CONFIG_DEBUG_NMI_SELFTEST is not set
 # CONFIG_X86_DEBUG_FPU is not set
 # CONFIG_PUNIT_ATOM_DEBUG is not set
-CONFIG_UNWINDER_ORC=y
+# CONFIG_UNWINDER_ORC is not set
 # CONFIG_UNWINDER_FRAME_POINTER is not set
-# CONFIG_UNWINDER_GUESS is not set
+CONFIG_UNWINDER_GUESS=y
 # end of Kernel hacking
 
 #