diff --git a/demo-project/groovy-gen-kotlin/build.gradle b/demo-project/groovy-gen-kotlin/build.gradle
index 8aff56e..28dc6df 100644
--- a/demo-project/groovy-gen-kotlin/build.gradle
+++ b/demo-project/groovy-gen-kotlin/build.gradle
@@ -172,6 +172,10 @@ buildConfig {
     )
     buildConfigField(Map.class, "MAP_GENERIC", expression("mapOf(\"a\" to 1, \"b\" to 2)"))
     buildConfigField(Map.class, "MAP_GENERIC_PROVIDER", provider { expression("mapOf(\"a\" to 1, \"b\" to 2)") })
+    buildConfigField(File.class, "FILE", new File("aFile"))
+    buildConfigField(File.class, "FILE_PROVIDER", provider { new File("aFile") })
+    buildConfigField(URI.class, "URI", uri("https://example.io"))
+    buildConfigField(URI.class, "URI_PROVIDER", provider { uri("https://example.io") })
     buildConfigField(
             "com.github.gmazzo.buildconfig.demos.groovy.SomeData",
             "DATA",
diff --git a/demo-project/groovy/build.gradle b/demo-project/groovy/build.gradle
index 379dd22..5993326 100644
--- a/demo-project/groovy/build.gradle
+++ b/demo-project/groovy/build.gradle
@@ -172,6 +172,10 @@ buildConfig {
     )
     buildConfigField(Map.class, "MAP_GENERIC", expression("java.util.Map.of(\"a\", 1, \"b\", 2)"))
     buildConfigField(Map.class, "MAP_GENERIC_PROVIDER", provider { expression("java.util.Map.of(\"a\", 1, \"b\", 2)") })
+    buildConfigField(File.class, "FILE", new File("aFile"))
+    buildConfigField(File.class, "FILE_PROVIDER", provider { new File("aFile") })
+    buildConfigField(URI.class, "URI", uri("https://example.io"))
+    buildConfigField(URI.class, "URI_PROVIDER", provider { uri("https://example.io") })
     buildConfigField(
             "com.github.gmazzo.buildconfig.demos.groovy.SomeData",
             "DATA",
diff --git a/demo-project/groovy/src/testFixtures/java/com/github/gmazzo/buildconfig/demos/groovy/BuildConfigBaseTest.java b/demo-project/groovy/src/testFixtures/java/com/github/gmazzo/buildconfig/demos/groovy/BuildConfigBaseTest.java
index b89f258..801c9c7 100644
--- a/demo-project/groovy/src/testFixtures/java/com/github/gmazzo/buildconfig/demos/groovy/BuildConfigBaseTest.java
+++ b/demo-project/groovy/src/testFixtures/java/com/github/gmazzo/buildconfig/demos/groovy/BuildConfigBaseTest.java
@@ -2,6 +2,8 @@
 
 import org.junit.Test;
 
+import java.io.File;
+import java.net.URI;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Map;
@@ -178,6 +180,10 @@ public void testCustomTypes() {
         assertEquals(Map.of("a", 1, "b", 2), BuildConfig.MAP_PROVIDER);
         assertEquals(Map.of("a", 1, "b", 2), BuildConfig.MAP_GENERIC);
         assertEquals(Map.of("a", 1, "b", 2), BuildConfig.MAP_GENERIC_PROVIDER);
+        assertEquals(new File("aFile"), BuildConfig.FILE);
+        assertEquals(new File("aFile"), BuildConfig.FILE_PROVIDER);
+        assertEquals(URI.create("https://example.io"), BuildConfig.URI);
+        assertEquals(URI.create("https://example.io"), BuildConfig.URI_PROVIDER);
         assertEquals(new SomeData("a", 1), BuildConfig.DATA);
         assertEquals(new SomeData("a", 1), BuildConfig.DATA_PROVIDER);
     }
diff --git a/demo-project/kts-gen-java/build.gradle.kts b/demo-project/kts-gen-java/build.gradle.kts
index 5b83eb6..acecb59 100644
--- a/demo-project/kts-gen-java/build.gradle.kts
+++ b/demo-project/kts-gen-java/build.gradle.kts
@@ -161,6 +161,10 @@ buildConfig {
     buildConfigField<Map<String, Int>>("MAP_PROVIDER", provider { expression("java.util.Map.of(\"a\", 1, \"b\", 2)") })
     buildConfigField<Map<*, *>>("MAP_GENERIC", expression("java.util.Map.of(\"a\", 1, \"b\", 2)"))
     buildConfigField<Map<*, *>>("MAP_GENERIC_PROVIDER", provider { expression("java.util.Map.of(\"a\", 1, \"b\", 2)") })
+    buildConfigField("FILE", File("aFile"))
+    buildConfigField("FILE_PROVIDER", provider { File("aFile") })
+    buildConfigField("URI", uri("https://example.io"))
+    buildConfigField("URI_PROVIDER", provider { uri("https://example.io") })
     buildConfigField(
         "com.github.gmazzo.buildconfig.demos.kts.SomeData",
         "DATA",
diff --git a/demo-project/kts/build.gradle.kts b/demo-project/kts/build.gradle.kts
index d6ec977..91a4789 100644
--- a/demo-project/kts/build.gradle.kts
+++ b/demo-project/kts/build.gradle.kts
@@ -176,6 +176,10 @@ buildConfig {
     buildConfigField<Map<String, Int>>("MAP_PROVIDER", provider { expression("mapOf(\"a\" to 1, \"b\" to 2)") })
     buildConfigField<Map<*, *>>("MAP_GENERIC", expression("mapOf(\"a\" to 1, \"b\" to 2)"))
     buildConfigField<Map<*, *>>("MAP_GENERIC_PROVIDER", provider { expression("mapOf(\"a\" to 1, \"b\" to 2)") })
+    buildConfigField("FILE", File("aFile"))
+    buildConfigField("FILE_PROVIDER", provider { File("aFile") })
+    buildConfigField("URI", uri("https://example.io"))
+    buildConfigField("URI_PROVIDER", provider { uri("https://example.io") })
     buildConfigField(
         "com.github.gmazzo.buildconfig.demos.kts.SomeData",
         "DATA",
diff --git a/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigJavaGenerator.kt b/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigJavaGenerator.kt
index 9f38719..4d1b08c 100644
--- a/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigJavaGenerator.kt
+++ b/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigJavaGenerator.kt
@@ -15,6 +15,8 @@ import com.squareup.javapoet.TypeSpec
 import com.squareup.javapoet.WildcardTypeName
 import org.gradle.api.logging.Logging
 import org.gradle.api.tasks.Input
+import java.io.File
+import java.net.URI
 import javax.lang.model.element.Modifier
 
 data class BuildConfigJavaGenerator(
@@ -122,6 +124,8 @@ data class BuildConfigJavaGenerator(
             TypeName.LONG -> "\$LL"
             TypeName.FLOAT -> "\$Lf"
             STRING -> "\$S"
+            FILE -> "new java.io.File(\$S)"
+            URI -> "java.net.URI.create(\$S)"
             else -> "\$L"
         }
 
@@ -165,6 +169,8 @@ data class BuildConfigJavaGenerator(
         private val STRING = ClassName.get(String::class.java)
         private val LIST = ClassName.get(List::class.java)
         private val SET = ClassName.get(Set::class.java)
+        private val FILE = ClassName.get(File::class.java)
+        private val URI = ClassName.get(URI::class.java)
         private val GENERIC_LIST = ClassName.get("", "List")
         private val GENERIC_SET = ClassName.get("", "Set")
     }
diff --git a/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigKotlinGenerator.kt b/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigKotlinGenerator.kt
index 85ea8e2..cb54c7a 100644
--- a/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigKotlinGenerator.kt
+++ b/plugin/src/main/kotlin/com/github/gmazzo/buildconfig/generators/BuildConfigKotlinGenerator.kt
@@ -34,9 +34,12 @@ import com.squareup.kotlinpoet.STAR
 import com.squareup.kotlinpoet.STRING
 import com.squareup.kotlinpoet.TypeName
 import com.squareup.kotlinpoet.TypeSpec
+import com.squareup.kotlinpoet.asClassName
 import com.squareup.kotlinpoet.asTypeName
 import org.gradle.api.logging.Logging
 import org.gradle.api.tasks.Input
+import java.io.File
+import java.net.URI
 
 data class BuildConfigKotlinGenerator(
     @get:Input var topLevelConstants: Boolean = false,
@@ -141,6 +144,8 @@ data class BuildConfigKotlinGenerator(
             LONG -> "%LL"
             FLOAT -> "%Lf"
             STRING -> "%S"
+            FILE -> "java.io.File(%S)"
+            URI -> "java.net.URI.create(%S)"
             else -> "%L"
         }
 
@@ -198,7 +203,9 @@ data class BuildConfigKotlinGenerator(
     companion object {
         private val CONST_TYPES = setOf(STRING, BOOLEAN, BYTE, SHORT, INT, LONG, CHAR, FLOAT, DOUBLE)
         private val GENERIC_LIST = ClassName("", "List")
-        private val GENERIC_SET = ClassName("", "SET")
+        private val GENERIC_SET = ClassName("", "Set")
+        private val FILE = File::class.asClassName()
+        private val URI = URI::class.asClassName()
     }
 
 }
diff --git a/plugin/src/main/kotlin/org/gradle/kotlin/dsl/BuildConfigClassSpecDSL.kt b/plugin/src/main/kotlin/org/gradle/kotlin/dsl/BuildConfigClassSpecDSL.kt
index 3edfbed..0a2a7b9 100644
--- a/plugin/src/main/kotlin/org/gradle/kotlin/dsl/BuildConfigClassSpecDSL.kt
+++ b/plugin/src/main/kotlin/org/gradle/kotlin/dsl/BuildConfigClassSpecDSL.kt
@@ -74,7 +74,7 @@ inline fun <reified Type : Serializable?> BuildConfigClassSpec.buildConfigField(
     value: List<Type>,
 ) = buildConfigField(name, Action {
     it.type(typeOf<List<Type>>())
-    it.value(if (value is Serializable) value else ArrayList(value))
+    it.value(ArrayList(value))
 })
 
 @BuildConfigDsl
@@ -84,7 +84,7 @@ inline fun <reified Type : Serializable?> BuildConfigClassSpec.buildConfigField(
     value: Set<Type>,
 ) = buildConfigField(name, Action {
     it.type(typeOf<Set<Type>>())
-    it.value(if (value is Serializable) value else LinkedHashSet(value))
+    it.value(LinkedHashSet(value))
 })
 
 @BuildConfigDsl