diff --git a/extra/tzdata/checksums b/extra/tzdata/checksums
index 6d2ed96e..5fe322ba 100644
--- a/extra/tzdata/checksums
+++ b/extra/tzdata/checksums
@@ -1 +1 @@
-10b9bcb12c6221bc6d86a81b2f43b241efb187ac68408efc4406070e5a9349c833
+9daf2fea1d7072732d658b4e2840766510b686f8a28667b8424e955aec59e3e797
diff --git a/extra/tzdata/sources b/extra/tzdata/sources
index 575ea333..c262e379 100644
--- a/extra/tzdata/sources
+++ b/extra/tzdata/sources
@@ -1 +1 @@
-https://github.com/eggert/tz/archive/2024a.tar.gz
+https://github.com/eggert/tz/archive/2024b.tar.gz
diff --git a/extra/tzdata/version b/extra/tzdata/version
index 8dd8de6e..ccb74bab 100644
--- a/extra/tzdata/version
+++ b/extra/tzdata/version
@@ -1 +1 @@
-2024a 1
+2024b 1