diff --git a/libtiff-4.6.0-reintroduce-ignore.patch b/libtiff-4.6.0-reintroduce-ignore.patch
new file mode 100644
index 0000000..2ac8bf4
--- /dev/null
+++ b/libtiff-4.6.0-reintroduce-ignore.patch
@@ -0,0 +1,31 @@
+diff --git a/tools/tiffcp.c b/tools/tiffcp.c
+index ebff4721d9fd2fa9cd3b3f209b88f5ae5e8b6f6a..650544e392a6639ccbcbccd4f913b208ca5c704f 100644
+--- a/tools/tiffcp.c
++++ b/tools/tiffcp.c
+@@ -221,7 +221,7 @@ int main(int argc, char *argv[])
+ 
+     *mp++ = 'w';
+     *mp = '\0';
+-    while ((c = getopt(argc, argv, "m:,:b:c:f:l:o:p:r:w:astBLMC8xh")) != -1)
++    while ((c = getopt(argc, argv, "m:,:b:c:f:l:o:p:r:w:aistBLMC8xh")) != -1)
+         switch (c)
+         {
+             case 'm':
+@@ -273,6 +273,9 @@ int main(int argc, char *argv[])
+                 else
+                     usage(EXIT_FAILURE);
+                 break;
++            case 'i': /* ignore errors */
++                ignore = TRUE;
++                break;
+             case 'l': /* tile length */
+                 outtiled = TRUE;
+                 deftilelength = atoi(optarg);
+@@ -567,6 +570,7 @@ static const char usage_info[] =
+     " -L              write little-endian instead of native byte order\n"
+     " -M              disable use of memory-mapped files\n"
+     " -C              disable strip chopping\n"
++    " -i              ignore read errors\n"
+     " -b file[,#]     bias (dark) monochrome image to be subtracted from all "
+     "others\n"
+     " -,=%            use % rather than , to separate image #'s (per Note "
diff --git a/libtiff.spec b/libtiff.spec
index 87b3402..6e666b1 100644
--- a/libtiff.spec
+++ b/libtiff.spec
@@ -1,7 +1,7 @@
 Summary:       Library of functions for manipulating TIFF format image files
 Name:          libtiff
 Version:       4.6.0
-Release:       9%{?dist}
+Release:       10%{?dist}
 License:       libtiff
 URL:           http://www.simplesystems.org/libtiff/
 
@@ -24,6 +24,9 @@ Patch4:        libtiff-4.6.0-CVE-2026-4775.patch
 # from upstream, for < 4.7.0, RHEL-179103
 # https://gitlab.com/libtiff/libtiff/-/commit/335947359ce2dd3862cd9f7c49f92eba065dfed4
 Patch5:        libtiff-4.6.0-CVE-2023-52355.patch
+# from upstream, for < 4.7.0, RHEL-185330
+# https://gitlab.com/libtiff/libtiff/-/commit/1c3ecce8498f634346a7030b1859faca24e126f5
+Patch6:        libtiff-4.6.0-reintroduce-ignore.patch
 
 BuildRequires: gcc, gcc-c++
 BuildRequires: zlib-devel libjpeg-devel jbigkit-devel libzstd-devel libwebp-devel liblerc-devel
@@ -80,6 +83,7 @@ image files using the libtiff library.
 %patch -P 3 -p1 -b .CVE-2023-52356
 %patch -P 4 -p1 -b .CVE-2026-4775
 %patch -P 5 -p1 -b .CVE-2023-52355
+%patch -P 6 -p1 -b .reintroduce-ignore
 
 # Use build system's libtool.m4, not the one in the package.
 rm -f libtool.m4
@@ -178,6 +182,9 @@ LD_LIBRARY_PATH=$PWD:$LD_LIBRARY_PATH make check
 %{_mandir}/man1/*
 
 %changelog
+* Mon Jun 29 2026 Michal Hlavinka <mhlavink@redhat.com> - 4.6.0-10
+- reintroduce ignore option -i as it is required for tests (RHEL-185330)
+
 * Wed Jun 03 2026 Michal Hlavinka <mhlavink@redhat.com> - 4.6.0-9
 - backport documentation change for CVE-2023-52355 (RHEL-179103)
 - fix CVE-2026-4775: signed integer overflow in putcontig8bitYCbCr44tile (RHEL-159311)