1.39.20 (#556)

diff --git a/emscripten-releases-tags.txt b/emscripten-releases-tags.txt
index 0c32abb..bba8c71 100644
--- a/emscripten-releases-tags.txt
+++ b/emscripten-releases-tags.txt
@@ -1,6 +1,7 @@
 {
-  "latest": "1.39.19",
+  "latest": "1.39.20",
   "releases": {
+    "1.39.20": "e7e39da9c81faecd9ecf44065cee864d76e4e34d",
     "1.39.19": "665121d026cafc46c29b30d6d4c45ed73eedbb7e",
     "1.39.18": "1914a1543f08cd8e41f44c2bb05f7a90d1920275",
     "1.39.17": "9bc968c0e49b1c795ecddb87391b265911e2adcb",