diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index cd5f4c71b00..c5f92a99a1e 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -246,9 +246,9 @@ def library_recipes():
 
     result.extend([
           dict(
-              name="OpenSSL 3.5.5",
-              url="https://github.com/openssl/openssl/releases/download/openssl-3.5.5/openssl-3.5.5.tar.gz",
-              checksum="b28c91532a8b65a1f983b4c28b7488174e4a01008e29ce8e69bd789f28bc2a89",
+              name="OpenSSL 3.5.6",
+              url="https://github.com/openssl/openssl/releases/download/openssl-3.5.6/openssl-3.5.6.tar.gz",
+              checksum="deae7c80cba99c4b4f940ecadb3c3338b13cb77418409238e57d7f31f2a3b736",
               buildrecipe=build_universal_openssl,
               configure=None,
               install=None,
diff --git a/Misc/NEWS.d/next/macOS/2026-05-01-20-12-33.gh-issue-149254.kXdWpS.rst b/Misc/NEWS.d/next/macOS/2026-05-01-20-12-33.gh-issue-149254.kXdWpS.rst
new file mode 100644
index 00000000000..278327c91f1
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2026-05-01-20-12-33.gh-issue-149254.kXdWpS.rst
@@ -0,0 +1 @@
+Update macOS installer to use OpenSSL 3.5.6.