diff --git a/exercises/practice/resistor-color-trio/.meta/config.json b/exercises/practice/resistor-color-trio/.meta/config.json
index 397ef24e81..403b20a7fc 100644
--- a/exercises/practice/resistor-color-trio/.meta/config.json
+++ b/exercises/practice/resistor-color-trio/.meta/config.json
@@ -3,7 +3,8 @@
     "SleeplessByte"
   ],
   "contributors": [
-    "hayashi-ay"
+    "hayashi-ay",
+    "jagdish-15"
   ],
   "files": {
     "solution": [
diff --git a/exercises/practice/resistor-color-trio/.meta/proof.ci.js b/exercises/practice/resistor-color-trio/.meta/proof.ci.js
index b421b68d4a..3b89a4d607 100644
--- a/exercises/practice/resistor-color-trio/.meta/proof.ci.js
+++ b/exercises/practice/resistor-color-trio/.meta/proof.ci.js
@@ -12,6 +12,8 @@ const COLORS = [
 ];
 
 const ONE_KILOOHM = 1000;
+const ONE_MEGAOHM = 1000000;
+const ONE_GIGAOHM = 1000000000;
 
 class ArgumentError extends Error {}
 
@@ -44,9 +46,18 @@ export class ResistorColorTrio {
 
   toString() {
     const value = this.value;
-    return value < ONE_KILOOHM
-      ? `${value} ohms`
-      : `${Math.floor(value / ONE_KILOOHM)} kiloohms`;
+
+    if (value >= ONE_GIGAOHM) {
+      return `${Math.floor(value / ONE_GIGAOHM)} gigaohms`;
+    }
+    if (value >= ONE_MEGAOHM) {
+      return `${Math.floor(value / ONE_MEGAOHM)} megaohms`;
+    }
+    if (value >= ONE_KILOOHM) {
+      return `${Math.floor(value / ONE_KILOOHM)} kiloohms`;
+    }
+
+    return `${value} ohms`;
   }
 
   /**
diff --git a/exercises/practice/resistor-color-trio/.meta/tests.toml b/exercises/practice/resistor-color-trio/.meta/tests.toml
index beabab3df5..b7d45fa5d5 100644
--- a/exercises/practice/resistor-color-trio/.meta/tests.toml
+++ b/exercises/practice/resistor-color-trio/.meta/tests.toml
@@ -1,6 +1,13 @@
-# This is an auto-generated file. Regular comments will be removed when this
-# file is regenerated. Regenerating will not touch any manually added keys,
-# so comments can be added in a "comment" key.
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
 
 [d6863355-15b7-40bb-abe0-bfb1a25512ed]
 description = "Orange and orange and black"
@@ -16,3 +23,18 @@ description = "Green and brown and orange"
 
 [f5d37ef9-1919-4719-a90d-a33c5a6934c9]
 description = "Yellow and violet and yellow"
+
+[5f6404a7-5bb3-4283-877d-3d39bcc33854]
+description = "Blue and violet and blue"
+
+[7d3a6ab8-e40e-46c3-98b1-91639fff2344]
+description = "Minimum possible value"
+
+[ca0aa0ac-3825-42de-9f07-dac68cc580fd]
+description = "Maximum possible value"
+
+[0061a76c-903a-4714-8ce2-f26ce23b0e09]
+description = "First two colors make an invalid octal number"
+
+[30872c92-f567-4b69-a105-8455611c10c4]
+description = "Ignore extra colors"
diff --git a/exercises/practice/resistor-color-trio/resistor-color-trio.spec.js b/exercises/practice/resistor-color-trio/resistor-color-trio.spec.js
index b1aa227af4..26562bd05b 100644
--- a/exercises/practice/resistor-color-trio/resistor-color-trio.spec.js
+++ b/exercises/practice/resistor-color-trio/resistor-color-trio.spec.js
@@ -36,6 +36,36 @@ describe('Resistor Color Trio', () => {
     );
   });
 
+  xtest('Blue and violet and blue', () => {
+    expect(new ResistorColorTrio(['blue', 'violet', 'blue']).label).toEqual(
+      makeLabel({ value: 67, unit: 'megaohms' }),
+    );
+  });
+
+  xtest('Minimum possible value', () => {
+    expect(new ResistorColorTrio(['black', 'black', 'black']).label).toEqual(
+      makeLabel({ value: 0, unit: 'ohms' }),
+    );
+  });
+
+  xtest('Maximum possible value', () => {
+    expect(new ResistorColorTrio(['white', 'white', 'white']).label).toEqual(
+      makeLabel({ value: 99, unit: 'gigaohms' }),
+    );
+  });
+
+  xtest('First two colors make an invalid octal number', () => {
+    expect(new ResistorColorTrio(['black', 'grey', 'black']).label).toEqual(
+      makeLabel({ value: 8, unit: 'ohms' }),
+    );
+  });
+
+  xtest('Ignore extra colors', () => {
+    expect(
+      new ResistorColorTrio(['blue', 'green', 'yellow', 'orange']).label,
+    ).toEqual(makeLabel({ value: 650, unit: 'kiloohms' }));
+  });
+
   // optional: error
   xtest('Invalid color', () => {
     expect(