diff --git a/input_data/android/countryzones.txt b/input_data/android/countryzones.txt
index fe9e464..d1a64ff 100644
--- a/input_data/android/countryzones.txt
+++ b/input_data/android/countryzones.txt
@@ -25,7 +25,7 @@
 # a time zone for an Android device.
 
 # ianaVersion: The version of the IANA rules this file matches.
-ianaVersion:"2024b"
+ianaVersion:"2025a"
 
 # countries:
 #
@@ -2729,7 +2729,7 @@
 countries:<
   isoCode:"py"
   timeZoneMappings:<
-    utcOffset:"-4:00"
+    utcOffset:"-3:00"
     id:"America/Asuncion"
   >
 >
diff --git a/input_data/iana/tzdata2024b.tar.gz b/input_data/iana/tzdata2024b.tar.gz
deleted file mode 100644
index ed9fe8f..0000000
--- a/input_data/iana/tzdata2024b.tar.gz
+++ /dev/null
Binary files differ
diff --git a/input_data/iana/tzdata2024b.tar.gz.asc b/input_data/iana/tzdata2024b.tar.gz.asc
deleted file mode 100644
index 03a137c..0000000
--- a/input_data/iana/tzdata2024b.tar.gz.asc
+++ /dev/null
@@ -1,16 +0,0 @@
------BEGIN PGP SIGNATURE-----
-
-iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmbYtYgACgkQ7ZfpDmKq
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-E1uQBnIrS4CHuso1wZRy0FHJYvSKGbRCN3jHyJBRSGgBTFGOuIY=
-=AXnJ
------END PGP SIGNATURE-----
diff --git a/input_data/iana/tzdata2025a.tar.gz b/input_data/iana/tzdata2025a.tar.gz
new file mode 100644
index 0000000..fee077f
--- /dev/null
+++ b/input_data/iana/tzdata2025a.tar.gz
Binary files differ
diff --git a/input_data/iana/tzdata2025a.tar.gz.asc b/input_data/iana/tzdata2025a.tar.gz.asc
new file mode 100644
index 0000000..a4ce3e2
--- /dev/null
+++ b/input_data/iana/tzdata2025a.tar.gz.asc
@@ -0,0 +1,16 @@
+-----BEGIN PGP SIGNATURE-----
+
+iQIzBAABCgAdFiEEfjeSqdis99YzvBWI7ZfpDmKqfjQFAmeIA2oACgkQ7ZfpDmKq
+fjREhxAAjB1QDroFoq07V+56IIrJR3pK/x4Z2jBbg53N49Cam1oMZK5Wxm291d0G
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+O5LhOQVm1986y9xy2YyF+Cy5s+xsKvKENQ0NbLIDa+l5MdEdEXc=
+=NQgW
+-----END PGP SIGNATURE-----
diff --git a/output_data/android/tzids.prototxt b/output_data/android/tzids.prototxt
index 3267da6..ba603e0 100644
--- a/output_data/android/tzids.prototxt
+++ b/output_data/android/tzids.prototxt
@@ -1,5 +1,5 @@
 # Autogenerated file - DO NOT EDIT.
-ianaVersion: "2024b"
+ianaVersion: "2025a"
 countryMappings {
   isoCode: "ad"
   timeZoneIds: "Europe/Andorra"
diff --git a/output_data/android/tzlookup.xml b/output_data/android/tzlookup.xml
index 70d9beb..da38859 100644
--- a/output_data/android/tzlookup.xml
+++ b/output_data/android/tzlookup.xml
@@ -2,7 +2,7 @@
 
  **** Autogenerated file - DO NOT EDIT ****
 
---><timezones ianaversion="2024b">
+--><timezones ianaversion="2025a">
  <countryzones>
   <country code="ad" default="Europe/Andorra" everutc="n">
    <id>Europe/Andorra</id>
diff --git a/output_data/iana/tzdata b/output_data/iana/tzdata
index 4500772..2dd2c26 100644
--- a/output_data/iana/tzdata
+++ b/output_data/iana/tzdata
Binary files differ
diff --git a/output_data/icu_overlay/zoneinfo64.res b/output_data/icu_overlay/zoneinfo64.res
index 9a1e5a6..3d809cf 100644
--- a/output_data/icu_overlay/zoneinfo64.res
+++ b/output_data/icu_overlay/zoneinfo64.res
Binary files differ
diff --git a/output_data/version/tz_version b/output_data/version/tz_version
index 6cd72c2..183987b 100644
--- a/output_data/version/tz_version
+++ b/output_data/version/tz_version
@@ -1 +1 @@
-009.001|2024b|001
\ No newline at end of file
+009.001|2025a|001
\ No newline at end of file
diff --git a/output_data/versioned/8/version/tz_version b/output_data/versioned/8/version/tz_version
index 814eb2a..aa9aca1 100644
--- a/output_data/versioned/8/version/tz_version
+++ b/output_data/versioned/8/version/tz_version
@@ -1 +1 @@
-008.001|2024b|001
\ No newline at end of file
+008.001|2025a|001
diff --git a/testing/data/test1/output_data/iana/tzdata b/testing/data/test1/output_data/iana/tzdata
index 6c5b28c..6909eb9 100644
--- a/testing/data/test1/output_data/iana/tzdata
+++ b/testing/data/test1/output_data/iana/tzdata
Binary files differ
diff --git a/testing/data/test1/output_data/icu_overlay/zoneinfo64.res b/testing/data/test1/output_data/icu_overlay/zoneinfo64.res
index 3e55ccd..fdffb07 100644
--- a/testing/data/test1/output_data/icu_overlay/zoneinfo64.res
+++ b/testing/data/test1/output_data/icu_overlay/zoneinfo64.res
Binary files differ
diff --git a/testing/data/test3/output_data/iana/tzdata b/testing/data/test3/output_data/iana/tzdata
index 6c5b28c..6909eb9 100644
--- a/testing/data/test3/output_data/iana/tzdata
+++ b/testing/data/test3/output_data/iana/tzdata
Binary files differ
diff --git a/testing/data/test3/output_data/icu_overlay/zoneinfo64.res b/testing/data/test3/output_data/icu_overlay/zoneinfo64.res
index f86d400..f504759 100644
--- a/testing/data/test3/output_data/icu_overlay/zoneinfo64.res
+++ b/testing/data/test3/output_data/icu_overlay/zoneinfo64.res
Binary files differ