diff --git a/exercises/practice/resistor-color-duo/src/test/kotlin/ResistorColorDuoTest.kt b/exercises/practice/resistor-color-duo/src/test/kotlin/ResistorColorDuoTest.kt
index 5693d90c..da248b87 100644
--- a/exercises/practice/resistor-color-duo/src/test/kotlin/ResistorColorDuoTest.kt
+++ b/exercises/practice/resistor-color-duo/src/test/kotlin/ResistorColorDuoTest.kt
@@ -1,3 +1,4 @@
+import kotlin.test.Ignore
 import kotlin.test.Test
 import kotlin.test.assertEquals
 
@@ -6,15 +7,19 @@ class ResistorColorDuoTest {
     @Test
     fun `brown and black`() = assertEquals(10, ResistorColorDuo.value(Color.BROWN, Color.BLACK))
 
+    @Ignore
     @Test
     fun `blue and grey`() = assertEquals(68, ResistorColorDuo.value(Color.BLUE, Color.GREY))
 
+    @Ignore
     @Test
     fun `yellow and violet`() = assertEquals(47, ResistorColorDuo.value(Color.YELLOW, Color.VIOLET))
 
+    @Ignore
     @Test
     fun `orange and orange`() = assertEquals(33, ResistorColorDuo.value(Color.ORANGE, Color.ORANGE))
 
+    @Ignore
     @Test
     fun `ignore additional colors`() = assertEquals(51, ResistorColorDuo.value(Color.GREEN, Color.BROWN, Color.ORANGE))
 
diff --git a/exercises/practice/resistor-color-trio/src/test/kotlin/ResistorColorTrioTest.kt b/exercises/practice/resistor-color-trio/src/test/kotlin/ResistorColorTrioTest.kt
index aaec015d..9927d7bc 100644
--- a/exercises/practice/resistor-color-trio/src/test/kotlin/ResistorColorTrioTest.kt
+++ b/exercises/practice/resistor-color-trio/src/test/kotlin/ResistorColorTrioTest.kt
@@ -1,24 +1,30 @@
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import Color.*
+import kotlin.test.Ignore
 
 class ResistorColorTrioTest {
 
     @Test
     fun `orange orange black`() = assertEquals("33 ohms", ResistorColorTrio.text(ORANGE, ORANGE, BLACK))
 
+    @Ignore
     @Test
     fun `blue grey brown`() = assertEquals("680 ohms", ResistorColorTrio.text(BLUE, GREY, BROWN))
 
+    @Ignore
     @Test
     fun `red black red`() = assertEquals("2 kiloohms", ResistorColorTrio.text(RED, BLACK, RED))
 
+    @Ignore
     @Test
     fun `green brown orange`() = assertEquals("51 kiloohms", ResistorColorTrio.text(GREEN, BROWN, ORANGE))
 
+    @Ignore
     @Test
     fun `yellow violet yellow`() = assertEquals("470 kiloohms", ResistorColorTrio.text(YELLOW, VIOLET, YELLOW))
 
+    @Ignore
     @Test
     fun `yellow violet violet`() = assertEquals("470 megaohms", ResistorColorTrio.text(YELLOW, VIOLET, VIOLET))
 }
diff --git a/exercises/practice/resistor-color/src/test/kotlin/ResistorColorTest.kt b/exercises/practice/resistor-color/src/test/kotlin/ResistorColorTest.kt
index 0b63e243..9f509076 100644
--- a/exercises/practice/resistor-color/src/test/kotlin/ResistorColorTest.kt
+++ b/exercises/practice/resistor-color/src/test/kotlin/ResistorColorTest.kt
@@ -1,3 +1,4 @@
+import kotlin.test.Ignore
 import kotlin.test.assertEquals
 import kotlin.test.Test
 
@@ -6,12 +7,15 @@ class ResistorColorTest {
     @Test
     fun testBlackColorCode() = assertEquals(0, ResistorColor.colorCode("black"))
 
+    @Ignore
     @Test
     fun testWhiteColorCode() = assertEquals(9, ResistorColor.colorCode("white"))
 
+    @Ignore
     @Test
     fun testOrangeColorCode() = assertEquals(3, ResistorColor.colorCode("orange"))
 
+    @Ignore
     @Test
     fun testColors() {
         val expected = listOf("black", "brown", "red", "orange", "yellow", "green", "blue", "violet", "grey", "white")