diff --git a/README.md b/README.md
index 0de3819..c780e0a 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ This action currently supports these versions of MRI, JRuby and TruffleRuby:
 | ----------- | -------- |
 | Ruby | 2.2, 2.3.0 - 2.3.8, 2.4.0 - 2.4.10, 2.5.0 - 2.5.8, 2.6.0 - 2.6.6, 2.7.1, head, debug, mingw, mswin |
 | JRuby | 9.1.17.0, 9.2.9.0 - 9.2.11.1, head |
-| TruffleRuby | 19.3.0 - 20.0.0, head |
+| TruffleRuby | 19.3.0 - 20.1.0, head |
 | Rubinius | 4.14 |
 
 `ruby-debug` is the same as `ruby-head` but with assertions enabled (`-DRUBY_DEBUG=1`).  
diff --git a/dist/index.js b/dist/index.js
index c2c9e85..50f118e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1489,7 +1489,7 @@ function getVersions(platform) {
     ],
     "truffleruby": [
       "19.3.0", "19.3.1",
-      "20.0.0",
+      "20.0.0", "20.1.0",
       "head"
     ]
   }
diff --git a/ruby-builder-versions.js b/ruby-builder-versions.js
index 6f17857..5d9ad51 100644
--- a/ruby-builder-versions.js
+++ b/ruby-builder-versions.js
@@ -16,7 +16,7 @@ export function getVersions(platform) {
     ],
     "truffleruby": [
       "19.3.0", "19.3.1",
-      "20.0.0",
+      "20.0.0", "20.1.0",
       "head"
     ]
   }