diff --git a/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2-r1.ebuild b/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2-r1.ebuild
index aae5f95c94..4ceaae8b2d 100644
--- a/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2-r1.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2-r1.ebuild
@@ -49,7 +49,7 @@ BDEPEND="
 "
 RDEPEND="
 	lzma? ( app-arch/xz-utils[static-libs?,${MULTILIB_USEDEP}] )
-	zlib? ( sys-libs/zlib[static-libs?,${MULTILIB_USEDEP}] )
+	zlib? ( virtual/zlib:=[static-libs?,${MULTILIB_USEDEP}] )
 "
 # We just use the header from libatomic.
 DEPEND="
diff --git a/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2.ebuild b/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2.ebuild
index 5438575643..316b63bdef 100644
--- a/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-1.8.2.ebuild
@@ -49,7 +49,7 @@ BDEPEND="
 "
 RDEPEND="
 	lzma? ( app-arch/xz-utils[static-libs?,${MULTILIB_USEDEP}] )
-	zlib? ( sys-libs/zlib[static-libs?,${MULTILIB_USEDEP}] )
+	zlib? ( virtual/zlib:=[static-libs?,${MULTILIB_USEDEP}] )
 "
 # We just use the header from libatomic.
 DEPEND="
diff --git a/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-9999.ebuild b/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-9999.ebuild
index 1ceb948cca..99e0e16ea7 100644
--- a/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-9999.ebuild
+++ b/sdk_container/src/third_party/portage-stable/sys-libs/libunwind/libunwind-9999.ebuild
@@ -49,7 +49,7 @@ BDEPEND="
 "
 RDEPEND="
 	lzma? ( app-arch/xz-utils[static-libs?,${MULTILIB_USEDEP}] )
-	zlib? ( sys-libs/zlib[static-libs?,${MULTILIB_USEDEP}] )
+	zlib? ( virtual/zlib:=[static-libs?,${MULTILIB_USEDEP}] )
 "
 # We just use the header from libatomic.
 DEPEND="