diff --git a/pangomm1_4-docs-without-timestamp.patch b/pangomm1_4-docs-without-timestamp.patch
new file mode 100644
index 0000000..ae56b41
--- /dev/null
+++ b/pangomm1_4-docs-without-timestamp.patch
@@ -0,0 +1,13 @@
+Index: pangomm-2.46.1/docs/reference/Doxyfile.in
+===================================================================
+--- pangomm-2.46.1.orig/docs/reference/Doxyfile.in
++++ pangomm-2.46.1/docs/reference/Doxyfile.in
+@@ -164,7 +164,7 @@ HTML_EXTRA_FILES       =
+ HTML_COLORSTYLE_HUE    = 220
+ HTML_COLORSTYLE_SAT    = 100
+ HTML_COLORSTYLE_GAMMA  = 80
+-HTML_TIMESTAMP         = YES
++HTML_TIMESTAMP         = NO
+ HTML_DYNAMIC_SECTIONS  = NO
+ HTML_INDEX_NUM_ENTRIES = 100
+ GENERATE_DOCSET        = NO
diff --git a/pangomm1_4.changes b/pangomm1_4.changes
index 051f3db..269f944 100644
--- a/pangomm1_4.changes
+++ b/pangomm1_4.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Sep 28 15:33:55 UTC 2021 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Add pangomm1_4-docs-without-timestamp.patch: do not add
+  timestampt to generated doc files.
+
 -------------------------------------------------------------------
 Tue Sep 28 14:22:14 UTC 2021 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/pangomm1_4.spec b/pangomm1_4.spec
index 56793c7..b2debcb 100644
--- a/pangomm1_4.spec
+++ b/pangomm1_4.spec
@@ -29,7 +29,8 @@ Group:          Development/Libraries/C and C++
 URL:            http://www.gtkmm.org
 Source0:        https://download.gnome.org/sources/pangomm/2.46/%{_name}-%{version}.tar.xz
 Source99:       baselibs.conf
-
+# PATCH-FIX-OPENSUSE pangomm1_4-docs-without-timestamp.patch dimstar@opensuse.org -- Do not add timestamps to generated doc files
+Patch0:         pangomm1_4-docs-without-timestamp.patch
 BuildRequires:  c++_compiler
 BuildRequires:  doxygen
 BuildRequires:  fdupes