diff --git a/extra/tzdata/build b/extra/tzdata/build
index 7585a791..0685a003 100755
--- a/extra/tzdata/build
+++ b/extra/tzdata/build
@@ -1,7 +1,5 @@
 #!/bin/sh -e
 
-patch -p1 < awk.patch
-
 make
 make DESTDIR="$1" ZICDIR=/usr/bin install
 
diff --git a/extra/tzdata/checksums b/extra/tzdata/checksums
index f95cb7ba..437dd0c8 100644
--- a/extra/tzdata/checksums
+++ b/extra/tzdata/checksums
@@ -1,2 +1 @@
-5da3fd3eb51d51d2aa4c599db8a1dd8dff453d79f4881131e35d40707ae1f838
-5fb0497a5a004d182f33a5e49e6a6f10a1c2db29c208363c7eefde8fc009b383
+067f0f4bee8e509b3eca502c5bd7c8f98073ab49b6c05654a157cbffd07aa3a4
diff --git a/extra/tzdata/patches/awk.patch b/extra/tzdata/patches/awk.patch
deleted file mode 100644
index dcf7ab4e..00000000
--- a/extra/tzdata/patches/awk.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-diff --git a/ziguard.awk b/ziguard.awk
-index 0728baa..9b3f2f8 100644
---- a/ziguard.awk
-+++ b/ziguard.awk
-@@ -165,7 +165,7 @@ DATAFORM != "main" {
-     sub(/[-+][^\t ]+CHANGE-TO-/, "")
-   } else {
-     if (/^[^#]*%z/) {
--      stdoff_column = 2 * /^Zone/ + 1
-+      stdoff_column = 2 * int(/^Zone/) + 1
-       rules_column = stdoff_column + 1
-       stdoff = get_minutes($stdoff_column)
-       rules = $rules_column
-@@ -222,7 +222,7 @@ DATAFORM != "main" {
-       stdoff_subst[1] = rounded_stdoff
-     }
-   } else if (stdoff_subst[0]) {
--    stdoff_column = 2 * /^Zone/ + 1
-+    stdoff_column = 2 * int(/^Zone/) + 1
-     stdoff_column_val = $stdoff_column
-     if (stdoff_column_val == stdoff_subst[0]) {
-       sub(stdoff_subst[0], stdoff_subst[1])
diff --git a/extra/tzdata/sources b/extra/tzdata/sources
index 990f92d2..ef6466ba 100644
--- a/extra/tzdata/sources
+++ b/extra/tzdata/sources
@@ -1,2 +1 @@
 https://github.com/eggert/tz/archive/VERSION.tar.gz
-patches/awk.patch
diff --git a/extra/tzdata/version b/extra/tzdata/version
index 96588fd9..aecd44d4 100644
--- a/extra/tzdata/version
+++ b/extra/tzdata/version
@@ -1 +1 @@
-2022b 1
+2022c 1