diff --git a/metadata/org.thymeleaf/thymeleaf/3.1.0.M2/reflect-config.json b/metadata/org.thymeleaf/thymeleaf/3.1.0.M2/reflect-config.json
index 94b28d84..4ac66690 100644
--- a/metadata/org.thymeleaf/thymeleaf/3.1.0.M2/reflect-config.json
+++ b/metadata/org.thymeleaf/thymeleaf/3.1.0.M2/reflect-config.json
@@ -1,4 +1,53 @@
 [
+  {
+    "name": "java.util.Collection",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.lang.Iterable",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.List",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Map",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Map$Entry",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Set",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Calendar",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
   {
     "name": "org.thymeleaf.expression.Dates",
     "allPublicMethods": true,
diff --git a/metadata/org.thymeleaf/thymeleaf/3.1.0.RC1/reflect-config.json b/metadata/org.thymeleaf/thymeleaf/3.1.0.RC1/reflect-config.json
index 2d2d2d37..e142f973 100644
--- a/metadata/org.thymeleaf/thymeleaf/3.1.0.RC1/reflect-config.json
+++ b/metadata/org.thymeleaf/thymeleaf/3.1.0.RC1/reflect-config.json
@@ -1,4 +1,67 @@
 [
+  {
+    "name": "java.util.Collection",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.lang.Iterable",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Iterator",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.List",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Map",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Map$Entry",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Set",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.Calendar",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
+  {
+    "name": "java.util.stream.Stream",
+    "allDeclaredMethods": true,
+    "condition": {
+      "typeReachable": "org.thymeleaf.util.ExpressionUtils"
+    }
+  },
   {
     "name": "org.thymeleaf.expression.Dates",
     "allPublicMethods": true,