diff --git a/nightly/conf/nightly.conf b/nightly/conf/nightly.conf
index 7865bf623..e3e786d7b 100644
--- a/nightly/conf/nightly.conf
+++ b/nightly/conf/nightly.conf
@@ -3,27 +3,27 @@
 ABT_DETAILS="x86_64"
 ABT_JOBS=5
 ABT_KERNELS="  \
-5.8            \
-5.7.12-nc      \
+5.8.5          \
+5.7.19-nc      \
 5.6.19-nc      \
 5.5.19-nc      \
-5.4.55-nc      \
+5.4.61-nc      \
 5.3.18-nc      \
 5.2.21-nc      \
 5.1.21-nc      \
 5.0.21-nc      \
 4.20.17-nc     \
-4.19.136-nc    \
+4.19.142-nc    \
 4.18.20-nc     \
 4.17.19-nc     \
 4.16.18-nc     \
 4.15.18-nc     \
-4.14.191-nc    \
+4.14.195-nc    \
 4.13.16-nc     \
 4.12.14-nc     \
 4.11.12-nc     \
 4.10.17-nc     \
-4.9.232-nc     \
+4.9.234-nc     \
 4.8.17-nc      \
 4.7.10-nc      \
 4.6.7-nc       \
@@ -65,7 +65,7 @@ ABT_KERNELS="  \
 4.18.0-193.14.2.el8_2^CentOS^8.2.2004-nc \
 4.18.0-147.8.1.el8_1^CentOS^8.1.1911-nc	\
 4.18.0-80.11.2.el8_0^CentOS^8.0.1905-nc	\
-3.10.0-1127.el7^CentOS^7.8.2003-nc	\
+3.10.0-1127.19.1.el7^CentOS^7.8.2003-nc	\
 3.10.0-1062.18.1.el7^CentOS^7.7.1908-nc	\
 3.10.0-957.27.2.el7^CentOS^7.6.1810-nc	\
 3.10.0-862.14.4.el7^CentOS^7.5.1804-nc	\
diff --git a/scst/include/backport.h b/scst/include/backport.h
index 9aa63dbc6..194bd4bbf 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -240,6 +240,15 @@ static inline void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len)
 #define __percpu
 #endif
 
+/* <linux/compiler_attributes.h> */
+
+/* See also commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough'
+ * pseudo keyword for switch/case use") # v5.4
+ */
+#ifndef fallthrough
+#define fallthrough __attribute__((__fallthrough__))
+#endif
+
 /* <linux/cpumask.h> */
 
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 20) && !defined(BACKPORT_LINUX_CPUMASK_H)