diff --git a/docs/manual.html b/docs/manual.html
index 89f4422a..2e3c4581 100644
--- a/docs/manual.html
+++ b/docs/manual.html
@@ -5134,9 +5134,10 @@ aria-hidden="true"><code>zint -b CODABLOCKF -d "CODABLOCK F Symbology" --rows=3<
 <p>This is a stacked symbology based on Code 128 which can encode
 Latin-1 data up to a maximum length of 2725 characters. The width of the
 Codablock-F symbol can be set using the <code>--cols</code> option (API
-<code>option_2</code>). The height (number of rows) can be set using the
-<code>--rows</code> option (API <code>option_1</code>). Zint does not
-currently support encoding of GS1 data in Codablock-F symbols.</p>
+<code>option_2</code>), to a value between 9 and 67. The height (number
+of rows) can be set using the <code>--rows</code> option (API
+<code>option_1</code>), with a maximum of 44. Zint does not currently
+support encoding of GS1 data in Codablock-F symbols.</p>
 <p>A separate symbology ID (<code>BARCODE_HIBC_BLOCKF</code>) can be
 used to encode Health Industry Barcode (HIBC) data which adds a leading
 <code>'+'</code> character and a modulo-49 check digit to the encoded
diff --git a/docs/manual.pmd b/docs/manual.pmd
index 3d459047..201d739e 100644
--- a/docs/manual.pmd
+++ b/docs/manual.pmd
@@ -3370,9 +3370,10 @@ demonstrated by the symbologies below.
 
 This is a stacked symbology based on Code 128 which can encode Latin-1 data up
 to a maximum length of 2725 characters. The width of the Codablock-F symbol can
-be set using the `--cols` option (API `option_2`). The height (number of rows)
-can be set using the `--rows` option (API `option_1`). Zint does not currently
-support encoding of GS1 data in Codablock-F symbols.
+be set using the `--cols` option (API `option_2`), to a value between 9 and 67.
+The height (number of rows) can be set using the `--rows` option (API
+`option_1`), with a maximum of 44. Zint does not currently support encoding of
+GS1 data in Codablock-F symbols.
 
 A separate symbology ID (`BARCODE_HIBC_BLOCKF`) can be used to encode Health
 Industry Barcode (HIBC) data which adds a leading `'+'` character and a
diff --git a/docs/manual.txt b/docs/manual.txt
index 9a8cafdd..edf38342 100644
--- a/docs/manual.txt
+++ b/docs/manual.txt
@@ -3246,9 +3246,10 @@ demonstrated by the symbologies below.
 
 This is a stacked symbology based on Code 128 which can encode Latin-1 data up
 to a maximum length of 2725 characters. The width of the Codablock-F symbol can
-be set using the --cols option (API option_2). The height (number of rows) can
-be set using the --rows option (API option_1). Zint does not currently support
-encoding of GS1 data in Codablock-F symbols.
+be set using the --cols option (API option_2), to a value between 9 and 67. The
+height (number of rows) can be set using the --rows option (API option_1), with
+a maximum of 44. Zint does not currently support encoding of GS1 data in
+Codablock-F symbols.
 
 A separate symbology ID (BARCODE_HIBC_BLOCKF) can be used to encode Health
 Industry Barcode (HIBC) data which adds a leading '+' character and a modulo-49