diff --git a/Readme.md b/Readme.md
index 62968fc..9f1d25e 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,7 +1,11 @@
 ## pico_adc program -- SPP interface to Pico ADC devices
 
+E.Sergeicheva,
+V.Zavjalov (vl.zavjalov at gmail dot com),
+2019-2024
+
 This is a simple C++ program which implements SPP interface
-to Pico ADC devices for using with device2 server
+to Pico ADC devices, for using with device2 server
 (https://github.com/slazav/device2)
 
 libpicohrdl library is needed.
diff --git a/spp-picoadc.spec b/spp-picoadc.spec
index ce6ab28..5f9ac60 100644
--- a/spp-picoadc.spec
+++ b/spp-picoadc.spec
@@ -1,5 +1,5 @@
 Name:         spp-picoadc
-Version:      1.0
+Version:      2.4
 Release:      alt1
 
 Summary:      SPP interface for Pico ADC devices
@@ -28,3 +28,23 @@ SPP interface for Pico ADC devices
 %_bindir/pico_adc
 
 %changelog
+* Thu Jan 25 2024 Vladislav Zavjalov <slazav@altlinux.org> 2.4-alt1
+- Move away from pico_rec package to a seperate repo
+  https://github.com/slazav/spp-picoadc
+
+* Tue Oct 13 2020 Vladislav Zavjalov <slazav@altlinux.org> 2.3-alt1
+This was v.2.3 of pico_osc package
+changes in pico_adc:
+ - rewrite code keeping old interface
+ - modify get_info command: print more information
+ - return +/-Inf at overflow
+ - allow 1-digit channels in chan_set command
+ - check timing configuration in get command
+ - new command: set_dig_out, setting digital output
+ - new command: disable_all, reset all channel settings
+ - new command: get_val, read a single value, no channel setup needed
+ - update documentation
+
+* Sat Jul 25 2020 Vladislav Zavjalov <slazav@altlinux.org> 2.2-alt1
+This was v.2.2 of pico_osc package
+- add pico_adc program (mostly by E.Sergeicheva)