diff --git a/google-noto-sans-sinhala-ex.conf b/google-noto-sans-sinhala-ex.conf
new file mode 100644
index 0000000..3b93bca
--- /dev/null
+++ b/google-noto-sans-sinhala-ex.conf
@@ -0,0 +1,12 @@
+  <match>
+    <test name="family">
+      <string>monospace</string>
+    </test>
+    <test name="lang">
+      <string>si</string>
+    </test>
+    <!-- Add Noto Sans Sinhala for monospace for workaround -->
+    <edit name="family" mode="append">
+      <string>Noto Sans Sinhala</string>
+    </edit>
+  </match>