diff --git a/compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.out b/compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.out
index 4bb5d5b4b2c..58a0033b730 100644
--- a/compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.out
+++ b/compiler/testData/cli/jvm/apiAndLanguageVersionsUnsupported.out
@@ -1,2 +1,2 @@
-error: language version 1.1 is no longer supported; please, use version 1.4 or greater.
+error: language version 1.1 is no longer supported; please, use version 1.3 or greater.
 COMPILATION_ERROR
diff --git a/compiler/testData/cli/jvm/apiVersionInvalid.out b/compiler/testData/cli/jvm/apiVersionInvalid.out
index 03e34c3f22e..ae650abee8f 100644
--- a/compiler/testData/cli/jvm/apiVersionInvalid.out
+++ b/compiler/testData/cli/jvm/apiVersionInvalid.out
@@ -1,3 +1,3 @@
 error: unknown API version: 239.42
-Supported API versions: 1.4 (DEPRECATED), 1.5, 1.6, 1.7 (EXPERIMENTAL), 1.8 (EXPERIMENTAL), 1.9 (EXPERIMENTAL)
+Supported API versions: 1.3 (DEPRECATED), 1.4 (DEPRECATED), 1.5, 1.6, 1.7 (EXPERIMENTAL), 1.8 (EXPERIMENTAL), 1.9 (EXPERIMENTAL)
 COMPILATION_ERROR
diff --git a/compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.out b/compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.out
index e9fa4e495bc..8a2d8464d6e 100644
--- a/compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.out
+++ b/compiler/testData/cli/jvm/deprecatedLanguageUnsupportedApi.out
@@ -1,2 +1,2 @@
-error: language version 1.2 is no longer supported; please, use version 1.4 or greater.
+error: language version 1.2 is no longer supported; please, use version 1.3 or greater.
 COMPILATION_ERROR
diff --git a/compiler/testData/cli/jvm/languageVersionInvalid.out b/compiler/testData/cli/jvm/languageVersionInvalid.out
index 2cce7fbff3d..1c34775732c 100644
--- a/compiler/testData/cli/jvm/languageVersionInvalid.out
+++ b/compiler/testData/cli/jvm/languageVersionInvalid.out
@@ -1,3 +1,3 @@
 error: unknown language version: 239.42
-Supported language versions: 1.4 (DEPRECATED), 1.5, 1.6, 1.7 (EXPERIMENTAL), 1.8 (EXPERIMENTAL), 1.9 (EXPERIMENTAL)
+Supported language versions: 1.3 (DEPRECATED), 1.4 (DEPRECATED), 1.5, 1.6, 1.7 (EXPERIMENTAL), 1.8 (EXPERIMENTAL), 1.9 (EXPERIMENTAL)
 COMPILATION_ERROR
diff --git a/compiler/testData/cli/jvm/languageVersionUnsupported.out b/compiler/testData/cli/jvm/languageVersionUnsupported.out
index 4bb5d5b4b2c..58a0033b730 100644
--- a/compiler/testData/cli/jvm/languageVersionUnsupported.out
+++ b/compiler/testData/cli/jvm/languageVersionUnsupported.out
@@ -1,2 +1,2 @@
-error: language version 1.1 is no longer supported; please, use version 1.4 or greater.
+error: language version 1.1 is no longer supported; please, use version 1.3 or greater.
 COMPILATION_ERROR
diff --git a/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt b/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
index 1c18e3abe29..200b083caee 100644
--- a/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
+++ b/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
@@ -394,15 +394,15 @@ enum class LanguageVersion(val major: Int, val minor: Int) : DescriptionAware, L
             str.split(".", "-").let { if (it.size >= 2) fromVersionString("${it[0]}.${it[1]}") else null }
 
         // Version status
-        //            1.0  1.1  1.2   1.3  1.4           1.5  1.6     1.7  1.8
-        // Language:  UNSUPPORTED -------> DEPRECATED -> STABLE ---> EXPERIMENTAL
+        //            1.0  1.1  1.2   1.3  1.4           1.5  1.6    1.7 1.8 1.9
+        // Language:  UNSUPPORTED --> DEPRECATED ------> STABLE ---> EXPERIMENTAL
         // API:       UNSUPPORTED --> DEPRECATED ------> STABLE ---> EXPERIMENTAL
 
         @JvmField
         val FIRST_API_SUPPORTED = KOTLIN_1_3
 
         @JvmField
-        val FIRST_SUPPORTED = KOTLIN_1_4
+        val FIRST_SUPPORTED = KOTLIN_1_3
 
         @JvmField
         val FIRST_NON_DEPRECATED = KOTLIN_1_5
diff --git a/libraries/tools/kotlin-gradle-plugin-api/src/main/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinCommonOptions.kt b/libraries/tools/kotlin-gradle-plugin-api/src/main/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinCommonOptions.kt
index 425044dfeb7..a874f8c8a2b 100644
--- a/libraries/tools/kotlin-gradle-plugin-api/src/main/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinCommonOptions.kt
+++ b/libraries/tools/kotlin-gradle-plugin-api/src/main/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinCommonOptions.kt
@@ -14,7 +14,7 @@ interface KotlinCommonOptions  : org.jetbrains.kotlin.gradle.dsl.KotlinCommonToo
 
     /**
      * Provide source compatibility with the specified version of Kotlin
-     * Possible values: "1.4 (DEPRECATED)", "1.5", "1.6", "1.7 (EXPERIMENTAL)", "1.8 (EXPERIMENTAL)", "1.9 (EXPERIMENTAL)"
+     * Possible values: "1.3 (DEPRECATED)", "1.4 (DEPRECATED)", "1.5", "1.6", "1.7 (EXPERIMENTAL)", "1.8 (EXPERIMENTAL)", "1.9 (EXPERIMENTAL)"
      * Default value: null
      */
      var languageVersion: kotlin.String?