diff --git a/status/explicit-failures-markup.xml b/status/explicit-failures-markup.xml
index c559d94256..3d2d640177 100644
--- a/status/explicit-failures-markup.xml
+++ b/status/explicit-failures-markup.xml
@@ -3586,6 +3586,50 @@ for more information.
         </mark-expected-failures>
     </library>
     
+    <!-- outcome -->
+    <library name="outcome">
+        <mark-unusable>
+            <toolset name="clang-linux-3*"/>
+            <toolset name="gcc-3*"/>
+            <toolset name="gcc-4*"/>
+            <toolset name="gcc-5*"/>
+            <toolset name="gcc-mngw-3*"/>
+            <toolset name="gcc-mngw-4*"/>
+            <toolset name="gcc-mngw-5*"/>
+            <toolset name="msvc-7*"/>
+            <toolset name="msvc-8*"/>
+            <toolset name="msvc-9*"/>
+            <toolset name="msvc-10*"/>
+            <toolset name="msvc-11*"/>
+            <toolset name="msvc-12*"/>
+            <toolset name="msvc-13*"/>
+            <toolset name="msvc-14.0.*"/>
+            <note author="Niall Douglas">Complete C++14 support is the minimum requirement.</note>
+        </mark-unusable>
+        <mark-expected-failures>
+            <test name="comparison"/>
+            <test name="constexpr"/>
+            <test name="core-result"/>
+            <test name="expected-pass"/>
+            <test name="experimental-core-result-status"/>
+            <test name="hooks"/>
+            <test name="issue0007"/>
+            <test name="issue0009"/>
+            <test name="issue0059"/>
+            <test name="issue0061"/>
+            <test name="propagate"/>
+            <toolset name="gcc-8-c++17"/>
+            <toolset name="gcc-8-c++2a"/>
+            <toolset name="gcc-8-gnu17"/>
+            <toolset name="gcc-8-gnu2a"/>
+            <toolset name="gcc-8-c++2a-O2"/>
+            <toolset name="gcc-8-c++2a-warn"/>
+            <toolset name="gcc-8~c++2a"/>
+            <toolset name="gcc-7~c++1z"/>
+            <note author="Niall Douglas">GCC 8 currently ICEs with Outcome's unit tests in C++ 17 or later.</note>
+        </mark-expected-failures>
+    </library>
+
     <!-- phoenix -->
     <library name="phoenix">
         <mark-expected-failures>