diff --git a/embulk-guess-csv/build.gradle b/embulk-guess-csv/build.gradle
index 5c9e5463..3e347431 100644
--- a/embulk-guess-csv/build.gradle
+++ b/embulk-guess-csv/build.gradle
@@ -39,7 +39,7 @@ dependencies {
 
     implementation project(":")
     implementation "org.embulk:embulk-util-config:0.3.4"
-    implementation "org.embulk:embulk-util-csv:0.2.3"
+    implementation "org.embulk:embulk-util-csv:0.2.4"
     implementation "org.embulk:embulk-util-json:0.3.0"
     implementation "org.embulk:embulk-util-guess:0.3.2"
     implementation "org.embulk:embulk-util-rubytime:0.3.3"
diff --git a/embulk-guess-csv/gradle.lockfile b/embulk-guess-csv/gradle.lockfile
index 1a6257bf..b0b94cb1 100644
--- a/embulk-guess-csv/gradle.lockfile
+++ b/embulk-guess-csv/gradle.lockfile
@@ -8,7 +8,7 @@ com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.6.7=compileClasspath,runt
 javax.validation:validation-api:1.1.0.Final=compileClasspath,runtimeClasspath
 org.embulk:embulk-spi:0.11=compileClasspath
 org.embulk:embulk-util-config:0.3.4=compileClasspath,runtimeClasspath
-org.embulk:embulk-util-csv:0.2.3=compileClasspath,runtimeClasspath
+org.embulk:embulk-util-csv:0.2.4=compileClasspath,runtimeClasspath
 org.embulk:embulk-util-file:0.1.5=compileClasspath,runtimeClasspath
 org.embulk:embulk-util-guess:0.3.2=compileClasspath,runtimeClasspath
 org.embulk:embulk-util-json:0.3.0=compileClasspath,runtimeClasspath
diff --git a/embulk-guess-csv_all_strings/build.gradle b/embulk-guess-csv_all_strings/build.gradle
index b83102b6..8e988f26 100644
--- a/embulk-guess-csv_all_strings/build.gradle
+++ b/embulk-guess-csv_all_strings/build.gradle
@@ -40,7 +40,7 @@ dependencies {
     implementation project(":embulk-guess-csv")
     implementation project(":")
     implementation "org.embulk:embulk-util-config:0.3.4"
-    implementation "org.embulk:embulk-util-csv:0.2.3"
+    implementation "org.embulk:embulk-util-csv:0.2.4"
     implementation "org.embulk:embulk-util-json:0.3.0"
     implementation "org.embulk:embulk-util-guess:0.3.2"
     implementation "org.embulk:embulk-util-rubytime:0.3.3"
diff --git a/embulk-guess-csv_all_strings/gradle.lockfile b/embulk-guess-csv_all_strings/gradle.lockfile
index 1a6257bf..b0b94cb1 100644
--- a/embulk-guess-csv_all_strings/gradle.lockfile
+++ b/embulk-guess-csv_all_strings/gradle.lockfile
@@ -8,7 +8,7 @@ com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.6.7=compileClasspath,runt
 javax.validation:validation-api:1.1.0.Final=compileClasspath,runtimeClasspath
 org.embulk:embulk-spi:0.11=compileClasspath
 org.embulk:embulk-util-config:0.3.4=compileClasspath,runtimeClasspath
-org.embulk:embulk-util-csv:0.2.3=compileClasspath,runtimeClasspath
+org.embulk:embulk-util-csv:0.2.4=compileClasspath,runtimeClasspath
 org.embulk:embulk-util-file:0.1.5=compileClasspath,runtimeClasspath
 org.embulk:embulk-util-guess:0.3.2=compileClasspath,runtimeClasspath
 org.embulk:embulk-util-json:0.3.0=compileClasspath,runtimeClasspath