diff --git a/etc/config/c++.amazon.properties b/etc/config/c++.amazon.properties
index 0774fb5d6d3adf8b84a50e8f763f6596db2716f6..41f3ddc56fe0b26a9dd3cad333a15d534e5c7c5a 100644
--- a/etc/config/c++.amazon.properties
+++ b/etc/config/c++.amazon.properties
@@ -241,7 +241,7 @@ compiler.ellcc0134.alias=elcc0134
 #################################
 #################################
 # Installed libs
-libs=boost:kvasir:cmcstl2:gsl:xtensor:abseil:ctre:eigen:benchmark:rangesv3:dlib
+libs=boost:kvasir:cmcstl2:gsl:xtensor:abseil:ctre:eigen:benchmark:rangesv3:dlib:libguarded
 libs.boost.name=Boost
 libs.boost.versions=164:165
 libs.boost.versions.164.version=1.64
@@ -304,3 +304,9 @@ libs.dlib.versions.trunk.version=trunk
 libs.dlib.versions.trunk.path=/opt/compiler-explorer/libs/dlib/trunk
 libs.dlib.versions.197.version=19.7
 libs.dlib.versions.197.path=/opt/compiler-explorer/libs/dlib/v19.7
+libs.libguarded.name=libGuarded
+libs.libguarded.versions=trunk:110
+libs.libguarded.versions.trunk.version=trunk
+libs.libguarded.versions.trunk.path=/opt/compiler-explorer/libs/libguarded/trunk/src
+libs.libguarded.versions.110.version=1.1.0
+libs.libguarded.versions.110.path=/opt/compiler-explorer/libs/libguarded/libguarded-1.1.0/src