diff --git a/net-misc/stunnel/files/stunnel-5.74-hardened-mimalloc.patch b/net-misc/stunnel/files/stunnel-5.74-hardened-mimalloc.patch
new file mode 100644
index 0000000000000..eeb27f9eb52d6
--- /dev/null
+++ b/net-misc/stunnel/files/stunnel-5.74-hardened-mimalloc.patch
@@ -0,0 +1,15 @@
+.so of mimalloc will be libmimalloc-secure.so if build with
+"-DMI_SECURE=ON" (USE="hardended" in Gentoo).
+diff --git a/configure.ac b/configure.ac
+index c647b5c..e2b1f55 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -225,7 +225,7 @@ AC_SEARCH_LIBS([openpty], [util])
+ AC_SEARCH_LIBS([dlopen], [dl])
+ AC_SEARCH_LIBS([shl_load], [dld])
+ # Checks for optional libraries
+-AC_SEARCH_LIBS([mi_malloc], [mimalloc])
++AC_SEARCH_LIBS([mi_malloc], [mimalloc mimalloc-secure])
+ 
+ # Add BeOS libraries
+ if test "x${host_os}" = "xbeos"; then
diff --git a/net-misc/stunnel/stunnel-5.74.ebuild b/net-misc/stunnel/stunnel-5.74.ebuild
index 3187e5965d072..ca1cf9937023f 100644
--- a/net-misc/stunnel/stunnel-5.74.ebuild
+++ b/net-misc/stunnel/stunnel-5.74.ebuild
@@ -43,6 +43,7 @@ BDEPEND="
 PATCHES=(
 	"${FILESDIR}"/${PN}-5.71-dont-clobber-fortify-source.patch
 	"${FILESDIR}"/${PN}-5.71-respect-EPYTHON-for-tests.patch
+	"${FILESDIR}"/${PN}-5.74-hardened-mimalloc.patch
 )
 
 python_check_deps() {
diff --git a/net-misc/stunnel/stunnel-5.75.ebuild b/net-misc/stunnel/stunnel-5.75.ebuild
index ed8a71dca93b6..46518864cdb86 100644
--- a/net-misc/stunnel/stunnel-5.75.ebuild
+++ b/net-misc/stunnel/stunnel-5.75.ebuild
@@ -43,6 +43,7 @@ BDEPEND="
 PATCHES=(
 	"${FILESDIR}"/${PN}-5.71-dont-clobber-fortify-source.patch
 	"${FILESDIR}"/${PN}-5.71-respect-EPYTHON-for-tests.patch
+	"${FILESDIR}"/${PN}-5.74-hardened-mimalloc.patch
 )
 
 python_check_deps() {