diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index dbad088d..9b3e0e0c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,8 +6,17 @@ repos:
             # tif_fax3sm.c is a generated file
             # tiffvers.h as well, and its formatting is sensitive for
             # FindTIFF.cmake to detect the version number
+            # Furthermore, the .in files are formatting sensitive for
+            # cmake functions.
             exclude: >
               (?x)^(
                 libtiff/tif_fax3sm.c|
-                libtiff/tiffvers.h
+                libtiff/tiffvers.h|
+                libtiff/tiffvers.h.in|
+                libtiff/tif_config.h|
+                libtiff/tif_config.h.in|
+                libtiff/tif_config.h.cmake.in|
+                libtiff/tiffconf.h|
+                libtiff/tiffconf.h.in|
+                libtiff/tiffconf.h.cmake.in
               )
diff --git a/libtiff/tif_config.h.cmake.in b/libtiff/tif_config.h.cmake.in
index 570e4e1b..b56f01ee 100644
--- a/libtiff/tif_config.h.cmake.in
+++ b/libtiff/tif_config.h.cmake.in
@@ -1,3 +1,8 @@
+/* clang-format off */
+/* clang-format disabled because CMake scripts are very sensitive to the
+ * formatting of this file.
+ */
+
 /* libtiff/tif_config.h.cmake.in.  Not generated, but originated from autoheader.  */
 /* This file must be kept up-to-date with needed substitutions from libtiff/tif_config.h.in. */
 
@@ -156,3 +161,5 @@
 #else
 #  error "Unsupported size_t size; please submit a bug report"
 #endif
+
+/* clang-format on */
diff --git a/libtiff/tif_config.h.in b/libtiff/tif_config.h.in
index 8fb78c38..9f519851 100644
--- a/libtiff/tif_config.h.in
+++ b/libtiff/tif_config.h.in
@@ -1,3 +1,8 @@
+/* clang-format off */
+/* clang-format disabled because CMake scripts are very sensitive to the
+ * formatting of this file.
+ */
+
 /* libtiff/tif_config.h.in.  Not generated, but originated from autoheader.  */
 
 #include "tiffconf.h"
@@ -172,3 +177,5 @@
 #else
 #  error "Unsupported size_t size; please submit a bug report"
 #endif
+
+/* clang-format on */
diff --git a/libtiff/tiffconf.h.cmake.in b/libtiff/tiffconf.h.cmake.in
index 5afbf3b2..9cd6b746 100644
--- a/libtiff/tiffconf.h.cmake.in
+++ b/libtiff/tiffconf.h.cmake.in
@@ -4,6 +4,11 @@
   from this file in your programs.
 */
 
+/* clang-format off */
+/* clang-format disabled because CMake scripts are very sensitive to the
+ * formatting of this file.
+ */
+
 #ifndef _TIFFCONF_
 #define _TIFFCONF_
 
@@ -125,3 +130,5 @@
 #define IPTC_SUPPORT
 
 #endif /* _TIFFCONF_ */
+
+/* clang-format on */
diff --git a/libtiff/tiffconf.h.in b/libtiff/tiffconf.h.in
index 6703eb0e..7c9559da 100644
--- a/libtiff/tiffconf.h.in
+++ b/libtiff/tiffconf.h.in
@@ -4,6 +4,11 @@
   from this file in your programs.
 */
 
+/* clang-format off */
+/* clang-format disabled because CMake scripts are very sensitive to the
+ * formatting of this file.
+ */
+
 #ifndef _TIFFCONF_
 #define _TIFFCONF_
 
@@ -125,3 +130,5 @@
 #define IPTC_SUPPORT
 
 #endif /* _TIFFCONF_ */
+
+/* clang-format on */