diff --git a/src/Nerdbank.GitVersioning.Tasks/RuntimeIdMap.cs b/src/Nerdbank.GitVersioning.Tasks/RuntimeIdMap.cs
index 1770a7f7..7413898c 100644
--- a/src/Nerdbank.GitVersioning.Tasks/RuntimeIdMap.cs
+++ b/src/Nerdbank.GitVersioning.Tasks/RuntimeIdMap.cs
@@ -216,6 +216,7 @@ internal static void ParseRuntimeId(string runtimeId, out string osName, out str
             "osx.10.13-x64",
             "osx.10.14",
             "osx.10.14-x64",
+            "pop.20.04-x64",
             "rhel-x64",
             "rhel.6-x64",
             "rhel.7-x64",
@@ -338,6 +339,7 @@ internal static void ParseRuntimeId(string runtimeId, out string osName, out str
             "osx",
             "osx",
             "osx",
+            "ubuntu.18.04-x64",
             "rhel-x64",
             "rhel-x64",
             "rhel-x64",