diff --git a/longabout.html b/longabout.html
index 76f198327aa..f6fc3626864 100644
--- a/longabout.html
+++ b/longabout.html
@@ -189,7 +189,7 @@ <h4>libFFI pre 3.5</h4>
 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 <p>
-<h4>zlib 1.2.13</h4>
+<h4>zlib 1.3</h4>
   (C) 1995-2023 Jean-loup Gailly and Mark Adler
 <p>
   This software is provided 'as-is', without any express or implied
diff --git a/runtime/include/about.html b/runtime/include/about.html
index 89dba24735b..316426d851e 100644
--- a/runtime/include/about.html
+++ b/runtime/include/about.html
@@ -40,7 +40,7 @@ <h3>Third Party Content</h3>
 Content directly from the Eclipse Foundation, the following is provided for informational purposes only, and you
 should look to the Redistributor's license for terms and conditions of use.</p>
 
-<h3>zlib 1.2.13</h3>
+<h3>zlib 1.3</h3>
 
 <p>zlib general purpose compression library obtained from https://zlib.net/</p>
 
diff --git a/runtime/zlib/about.html b/runtime/zlib/about.html
index 386c74138a9..2ebfb1b5ad1 100644
--- a/runtime/zlib/about.html
+++ b/runtime/zlib/about.html
@@ -39,13 +39,13 @@ <h3>Third Party Content</h3>
 Content directly from the Eclipse Foundation, the following is provided for informational purposes only, and you
 should look to the Redistributor's license for terms and conditions of use.</p>
 
-<h3>zlib 1.2.13</h3>
+<h3>zlib 1.3</h3>
 
 <p>zlib general purpose compression library obtained from http://zlib.net/</p>
 
 <p>The software is modified from the original version.</p>
 
-<p>Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler</p>
+<p>Copyright (C) 1995-2023 Jean-loup Gailly and Mark Adler</p>
 
 <p>This software is
 provided 'as-is', without any express or implied warranty. In no event will the