diff --git a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/MessageContent.kt b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/MessageContent.kt
index f10b6ccc..b6640c62 100644
--- a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/MessageContent.kt
+++ b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/MessageContent.kt
@@ -5,7 +5,7 @@
 
 package org.opensearch.notifications.spi.model
 
-import org.opensearch.common.Strings
+import org.opensearch.core.common.Strings
 
 /**
  *  class for storing message.
diff --git a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SesDestination.kt b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SesDestination.kt
index bce9f11b..6ee8776d 100644
--- a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SesDestination.kt
+++ b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SesDestination.kt
@@ -6,7 +6,7 @@
 package org.opensearch.notifications.spi.model.destination
 
 import com.amazonaws.regions.Regions
-import org.opensearch.common.Strings
+import org.opensearch.core.common.Strings
 import org.opensearch.notifications.spi.utils.validateEmail
 
 /**
diff --git a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SmtpDestination.kt b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SmtpDestination.kt
index b26b1f60..2be13a59 100644
--- a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SmtpDestination.kt
+++ b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/model/destination/SmtpDestination.kt
@@ -5,7 +5,7 @@
 
 package org.opensearch.notifications.spi.model.destination
 
-import org.opensearch.common.Strings
+import org.opensearch.core.common.Strings
 import org.opensearch.notifications.spi.utils.validateEmail
 
 /**
diff --git a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/utils/ValidationHelpers.kt b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/utils/ValidationHelpers.kt
index cabc5548..aa1ce77c 100644
--- a/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/utils/ValidationHelpers.kt
+++ b/notifications/core-spi/src/main/kotlin/org/opensearch/notifications/spi/utils/ValidationHelpers.kt
@@ -10,7 +10,7 @@ import org.apache.commons.validator.routines.DomainValidator
 import org.apache.http.client.methods.HttpPatch
 import org.apache.http.client.methods.HttpPost
 import org.apache.http.client.methods.HttpPut
-import org.opensearch.common.Strings
+import org.opensearch.core.common.Strings
 import org.opensearch.notifications.spi.utils.ValidationHelpers.FQDN_REGEX
 import java.net.InetAddress
 import java.net.URL
diff --git a/notifications/core/src/main/kotlin/org/opensearch/notifications/core/utils/ValidationHelpers.kt b/notifications/core/src/main/kotlin/org/opensearch/notifications/core/utils/ValidationHelpers.kt
index d25f964e..28c6862c 100644
--- a/notifications/core/src/main/kotlin/org/opensearch/notifications/core/utils/ValidationHelpers.kt
+++ b/notifications/core/src/main/kotlin/org/opensearch/notifications/core/utils/ValidationHelpers.kt
@@ -9,7 +9,7 @@ import inet.ipaddr.IPAddressString
 import org.apache.http.client.methods.HttpPatch
 import org.apache.http.client.methods.HttpPost
 import org.apache.http.client.methods.HttpPut
-import org.opensearch.common.Strings
+import org.opensearch.core.common.Strings
 import java.net.URL
 
 fun validateUrl(urlString: String) {