diff --git a/com-on-air_cs-linux/com_on_air.c b/com-on-air_cs-linux/com_on_air.c
index 83c7722..b006eec 100644
--- a/com-on-air_cs-linux/com_on_air.c
+++ b/com-on-air_cs-linux/com_on_air.c
@@ -20,6 +20,7 @@
 #include <linux/crc32.h>
 #include <linux/kfifo.h>
 #include <linux/poll.h>
+#include <linux/version.h>
 
 #include <pcmcia/cistpl.h>
 #include <pcmcia/ciscode.h>
@@ -406,7 +407,11 @@ com_on_air_irq_handler(int irq, void *dev_id)
 
 	uint8_t dip_irq = 0;
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
+	jiffies_to_timespec64(jiffies, &dev->irq_timestamp);
+#else
 	jiffies_to_timespec(jiffies, &dev->irq_timestamp);
+#endif
 	dev->irq_count++;
 
 	switch(dev->operation_mode & COA_MODEMASK)
diff --git a/com-on-air_cs-linux/com_on_air.h b/com-on-air_cs-linux/com_on_air.h
index f5c92d7..391b4ec 100644
--- a/com-on-air_cs-linux/com_on_air.h
+++ b/com-on-air_cs-linux/com_on_air.h
@@ -16,6 +16,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/version.h>
 
 struct coa_info
 {
@@ -24,7 +25,11 @@ struct coa_info
 
 	int                     irq;
 	int                     irq_count;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
+	struct timespec64       irq_timestamp;
+#else
 	struct timespec         irq_timestamp;
+#endif
 
 	struct pcmcia_device    *links[2];
 
diff --git a/com-on-air_cs-linux/sc14421_sniffer.h b/com-on-air_cs-linux/sc14421_sniffer.h
index aa75469..0fb3507 100644
--- a/com-on-air_cs-linux/sc14421_sniffer.h
+++ b/com-on-air_cs-linux/sc14421_sniffer.h
@@ -29,6 +29,8 @@
 #include "dect.h"
 #include "com_on_air.h"
 
+#include <linux/version.h>
+
 struct sniffer_cfg
 {
 	int			snifftype;
@@ -57,7 +59,11 @@ struct sniffed_packet
 	unsigned char     channel;
 	unsigned char     slot;
 	unsigned char     frameflags;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 6, 0)
+	struct timespec64 timestamp;
+#else
 	struct timespec   timestamp;
+#endif
 	unsigned char     data[53];
 };