diff --git a/libHX-4.1.tar.asc b/libHX-4.1.tar.asc
deleted file mode 100644
index 4765ab3..0000000
--- a/libHX-4.1.tar.asc
+++ /dev/null
@@ -1,16 +0,0 @@
------BEGIN PGP SIGNATURE-----
-
-iQIzBAABCgAdFiEEI2hsEKRWkb56QlEJ1jiBgfNaCTgFAmFm18sACgkQ1jiBgfNa
-CTijvRAAlEtVMZFury8gBLeu9NhvlmvFpvQs/jeTQo8jt0D1KPTuUp9PDqx7ygi1
-baSxXwfauqiNM/MaHkfEKRX85/AFbW+ia+uX9cJJuojlm5HAFRCevk3RTQ8xXxYH
-Hjhpr8ZsnAIa3JRwhAkiQZsnEeGVH8wMDs3KyFgKJ34AiRiRy5T80QqImFkenE7m
-wq7K3RiXW/oFytFjTodWIGCZiWih1Iihs7spzFiZKeAWMCMLw8IGPjeWhoNnk2Yw
-tvYr0Fl/A86fxbkciKKYaEiPzEuQz9uVmEfGLE786qK9jMWiAfaPrbjXQ84mIt1m
-B3zeqQ67qsfxWG+LMxO1F3q5UElVYQfI3dxbQzUZGXDB4Tv906AUFm7AwFAHsyID
-tDeAmDuK3VzGoSwy8rSsNe3O4sNyCSG4hoMnkig2S835P0QjDEpiMiETkQFkNZT4
-END145y/KiLhIS3n1QQqaABDeDKGvhoRHFc0GtQgOdmAOihRanZ+GapQzszFhCpX
-oVidlCqOPzC2kmBwgU0r87AWHffiUU+dhNOgFO8357icAROInE+u/tHHLiioh4Rh
-SiWmJGzy3NnZqAL79ymNYIcgb6dSdcFXnp4+jRFxGZZBggG879jYGZV4xPpTDs5z
-NZBFjyBTlH2VQ9mLvHTm/TIKBaYMjteG02KUFkE/4s5ZRwqx6oM=
-=7Vbw
------END PGP SIGNATURE-----
diff --git a/libHX-4.1.tar.xz b/libHX-4.1.tar.xz
deleted file mode 100644
index a1a891f..0000000
--- a/libHX-4.1.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:42f93bd0ba6d21b011c95d01359f44111789d45b3b6cc8d53baace92fbbf2ed6
-size 362788
diff --git a/libHX-4.2.tar.asc b/libHX-4.2.tar.asc
new file mode 100644
index 0000000..a8bf600
--- /dev/null
+++ b/libHX-4.2.tar.asc
@@ -0,0 +1,16 @@
+-----BEGIN PGP SIGNATURE-----
+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+=fnvJ
+-----END PGP SIGNATURE-----
diff --git a/libHX-4.2.tar.xz b/libHX-4.2.tar.xz
new file mode 100644
index 0000000..5406106
--- /dev/null
+++ b/libHX-4.2.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5216b765f73c36ff91e999fd5eabc1dbc13801d140b8238fc80ba9c263d723e6
+size 365120
diff --git a/libHX.changes b/libHX.changes
index c7868a7..5caa9e0 100644
--- a/libHX.changes
+++ b/libHX.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Sun Oct 17 16:55:45 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 4.2
+  * string: New functions ``HX_strtod_unit``, ``HX_strtoull_unit``,
+    ``HX_unit_size``, ``HX_unit_size_cu`` for converting between
+    sizes and human-readable sizes like 1457664 <-> "1.45M"/"1.39M".
+
 -------------------------------------------------------------------
 Wed Oct 13 12:59:26 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/libHX.spec b/libHX.spec
index 76440d5..baa4736 100644
--- a/libHX.spec
+++ b/libHX.spec
@@ -18,7 +18,7 @@
 
 Name:           libHX
 %define lname   libHX32
-Version:        4.1
+Version:        4.2
 Release:        0
 Summary:        Collection of routines for C and C++ programming
 License:        LGPL-2.1-or-later