diff --git a/ci/common.jsonnet b/ci/common.jsonnet
index ac61717efa4..f1b5e518b80 100644
--- a/ci/common.jsonnet
+++ b/ci/common.jsonnet
@@ -128,6 +128,7 @@ local common_json = import "../common.json";
     mx: {
       environment+: {
         MX_PYTHON: "python3.8",
+        PYTHONIOENCODING: "utf-8",
       },
       packages+: {
         python3: "==3.8.10",
diff --git a/mx.truffleruby/suite.py b/mx.truffleruby/suite.py
index d1e6d2171b3..299f31a3562 100644
--- a/mx.truffleruby/suite.py
+++ b/mx.truffleruby/suite.py
@@ -20,7 +20,7 @@
             {
                 "name": "regex",
                 "subdir": True,
-                "version": "a65ec785e7fecfa58450c0ccc062e3a64f16aca0",
+                "version": "5f68ad3c9ba1df6c8f095e3e2afe688bfa1feb61",
                 "urls": [
                     {"url": "https://github.com/oracle/graal.git", "kind": "git"},
                     {"url": "https://curio.ssw.jku.at/nexus/content/repositories/snapshots", "kind": "binary"},
@@ -29,7 +29,7 @@
             {
                 "name": "sulong",
                 "subdir": True,
-                "version": "a65ec785e7fecfa58450c0ccc062e3a64f16aca0",
+                "version": "5f68ad3c9ba1df6c8f095e3e2afe688bfa1feb61",
                 "urls": [
                     {"url": "https://github.com/oracle/graal.git", "kind": "git"},
                     {"url": "https://curio.ssw.jku.at/nexus/content/repositories/snapshots", "kind": "binary"},