diff --git a/SConstruct b/SConstruct
index 86ed70d31d3..014049cca18 100644
--- a/SConstruct
+++ b/SConstruct
@@ -3946,6 +3946,10 @@ def doConfigure(myenv):
             myenv.Append(CXXFLAGS=["-Wnon-virtual-dtor"])
         conf.Finish()
 
+        # TODO(SERVER-97447): Remove this once we're fully on the v5 toolchain. In the meantime, we
+        # need to suppress some warnings that are only recognized by the new compilers.
+        myenv.AddToCXXFLAGSIfSupported("-Wno-unknown-warning-option")
+
         # As of XCode 9, this flag must be present (it is not enabled
         # by -Wall), in order to enforce that -mXXX-version-min=YYY
         # will enforce that you don't use APIs from ZZZ.
diff --git a/bazel/mongo_src_rules.bzl b/bazel/mongo_src_rules.bzl
index ba33c47cf34..05728b52c56 100644
--- a/bazel/mongo_src_rules.bzl
+++ b/bazel/mongo_src_rules.bzl
@@ -489,6 +489,11 @@ GCC_OR_CLANG_WARNINGS_COPTS = select({
         # SERVER-76472 we don't try to maintain ABI so disable warnings about
         # possible ABI issues.
         "-Wno-psabi",
+
+        # TODO(SERVER-97447): Remove this once we're fully on the v5 toolchain.
+        # In the meantime, we need to suppress some warnings that are only
+        # recognized by the new compilers.
+        "-Wno-unknown-warning-option",
     ],
     "//conditions:default": [],
 })