diff --git a/Documentation/hwmon/acpi_power_meter.rst b/Documentation/hwmon/acpi_power_meter.rst
index 4a0941ade0ca..8628c1161015 100644
--- a/Documentation/hwmon/acpi_power_meter.rst
+++ b/Documentation/hwmon/acpi_power_meter.rst
@@ -9,7 +9,7 @@ Supported systems:
 
     Prefix: 'power_meter'
 
-    Datasheet: http://acpi.info/, section 10.4.
+    Datasheet: https://uefi.org/specifications, section 10.4.
 
 Author: Darrick J. Wong
 
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index ce2730d61a8f..7428cd2f9f6d 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -40,8 +40,7 @@ menuconfig ACPI
 	  the UEFI Forum and any UEFI member can join the ASWG and contribute
 	  to the ACPI specification.
 	  The specification is available at:
-	  <http://www.acpi.info>
-	  <http://www.uefi.org/acpi/specs>
+	  <https://uefi.org/specifications>
 
 if ACPI
 
diff --git a/include/linux/tboot.h b/include/linux/tboot.h
index c7e424766360..5146d2574e85 100644
--- a/include/linux/tboot.h
+++ b/include/linux/tboot.h
@@ -44,7 +44,7 @@ struct tboot_acpi_generic_address {
 
 /*
  * combines Sx info from FADT and FACS tables per ACPI 2.0+ spec
- * (http://www.acpi.info/)
+ * (https://uefi.org/specifications)
  */
 struct tboot_acpi_sleep_info {
 	struct tboot_acpi_generic_address pm1a_cnt_blk;
diff --git a/tools/power/cpupower/man/cpupower-idle-info.1 b/tools/power/cpupower/man/cpupower-idle-info.1
index 80a1311fa747..20b6345c53ad 100644
--- a/tools/power/cpupower/man/cpupower-idle-info.1
+++ b/tools/power/cpupower/man/cpupower-idle-info.1
@@ -75,7 +75,7 @@ By default only values of core zero are displayed. How to display settings of
 other cores is described in the cpupower(1) manpage in the \-\-cpu option
 section.
 .SH REFERENCES
-http://www.acpi.info/spec.htm
+https://uefi.org/specifications
 .SH "FILES"
 .nf
 \fI/sys/devices/system/cpu/cpu*/cpuidle/state*\fP