diff --git a/3rdparty/readme.txt b/3rdparty/readme.txt
index c3068521e3..0e6ce1e05e 100644
--- a/3rdparty/readme.txt
+++ b/3rdparty/readme.txt
@@ -39,7 +39,9 @@ libspng               Portable Network Graphics library.
 libtiff               Tag Image File Format (TIFF) Software
                       Copyright (c) 1988-1997 Sam Leffler
                       Copyright (c) 1991-1997 Silicon Graphics, Inc.
-                      See libtiff home page http://www.libtiff.org/
+                      See libtiff home page #1 http://www.simplesystems.org/libtiff/
+                                            #2 https://libtiff.gitlab.io/libtiff/
+                                            #3 http://libtiff.maptools.org/
                       for details and links to the source code
 
                       WITH_TIFF CMake option must be ON to add libtiff & zlib support to imgcodecs.
diff --git a/modules/imgcodecs/src/grfmt_tiff.cpp b/modules/imgcodecs/src/grfmt_tiff.cpp
index ed21f3f14c..4febee36db 100644
--- a/modules/imgcodecs/src/grfmt_tiff.cpp
+++ b/modules/imgcodecs/src/grfmt_tiff.cpp
@@ -245,7 +245,7 @@ bool TiffDecoder::readHeader()
     if (!tif)
     {
         // TIFFOpen() mode flags are different to fopen().  A 'b' in mode "rb" has no effect when reading.
-        // http://www.remotesensing.org/libtiff/man/TIFFOpen.3tiff.html
+        // http://www.simplesystems.org/libtiff/functions/TIFFOpen.html
         if ( !m_buf.empty() )
         {
             m_buf_pos = 0;
@@ -1118,7 +1118,7 @@ public:
     TIFF* open ()
     {
         // do NOT put "wb" as the mode, because the b means "big endian" mode, not "binary" mode.
-        // http://www.remotesensing.org/libtiff/man/TIFFOpen.3tiff.html
+        // http://www.simplesystems.org/libtiff/functions/TIFFOpen.html
         return TIFFClientOpen( "", "w", reinterpret_cast<thandle_t>(this), &TiffEncoderBufHelper::read,
                                &TiffEncoderBufHelper::write, &TiffEncoderBufHelper::seek,
                                &TiffEncoderBufHelper::close, &TiffEncoderBufHelper::size,
@@ -1200,7 +1200,7 @@ static bool readParam(const std::vector<int>& params, int key, int& value)
 bool TiffEncoder::writeLibTiff( const std::vector<Mat>& img_vec, const std::vector<int>& params)
 {
     // do NOT put "wb" as the mode, because the b means "big endian" mode, not "binary" mode.
-    // http://www.remotesensing.org/libtiff/man/TIFFOpen.3tiff.html
+    // http://www.simplesystems.org/libtiff/functions/TIFFOpen.html
     TIFF* tif = NULL;
 
     TiffEncoderBufHelper buf_helper(m_buf);