diff --git a/aws/resource_aws_lex_bot.go b/aws/resource_aws_lex_bot.go
index 828da35e1f0e..4d15747d15d0 100644
--- a/aws/resource_aws_lex_bot.go
+++ b/aws/resource_aws_lex_bot.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"log"
 	"regexp"
+	"strconv"
 	"time"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -440,8 +441,9 @@ func resourceAwsLexBotDelete(d *schema.ResourceData, meta interface{}) error {
 }
 
 func getLatestLexBotVersion(conn *lexmodelbuildingservice.LexModelBuildingService, input *lexmodelbuildingservice.GetBotVersionsInput) (string, error) {
-	version := LexBotVersionLatest
+	version := 0
 
+	var botVersion int
 	for {
 		page, err := conn.GetBotVersions(input)
 		if err != nil {
@@ -457,8 +459,15 @@ func getLatestLexBotVersion(conn *lexmodelbuildingservice.LexModelBuildingServic
 			if *bot.Version == LexBotVersionLatest {
 				continue
 			}
-			if *bot.Version > version {
-				version = *bot.Version
+
+			botVersion, err = strconv.Atoi(*bot.Version)
+			if err != nil {
+				log.Printf("[DEBUG] invalid version for Lex Bot: %s", *bot.Version)
+				continue
+			}
+
+			if botVersion > version {
+				version = botVersion
 			}
 		}
 
@@ -468,7 +477,7 @@ func getLatestLexBotVersion(conn *lexmodelbuildingservice.LexModelBuildingServic
 		input.NextToken = page.NextToken
 	}
 
-	return version, nil
+	return strconv.Itoa(version), nil
 }
 
 func flattenLexIntents(intents []*lexmodelbuildingservice.Intent) (flattenedIntents []map[string]interface{}) {
diff --git a/aws/resource_aws_lex_intent.go b/aws/resource_aws_lex_intent.go
index 767d3c787563..d1fdbdc159d5 100644
--- a/aws/resource_aws_lex_intent.go
+++ b/aws/resource_aws_lex_intent.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"log"
 	"regexp"
+	"strconv"
 	"time"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -609,8 +610,9 @@ var lexStatementResource = &schema.Resource{
 }
 
 func getLatestLexIntentVersion(conn *lexmodelbuildingservice.LexModelBuildingService, input *lexmodelbuildingservice.GetIntentVersionsInput) (string, error) {
-	version := LexIntentVersionLatest
+	version := 0
 
+	var intentVersion int
 	for {
 		page, err := conn.GetIntentVersions(input)
 		if err != nil {
@@ -626,8 +628,15 @@ func getLatestLexIntentVersion(conn *lexmodelbuildingservice.LexModelBuildingSer
 			if *intent.Version == LexIntentVersionLatest {
 				continue
 			}
-			if *intent.Version > version {
-				version = *intent.Version
+
+			intentVersion, err = strconv.Atoi(*intent.Version)
+			if err != nil {
+				log.Printf("[DEBUG] invalid version for Lex Intent: %s", *intent.Version)
+				continue
+			}
+
+			if intentVersion > version {
+				version = intentVersion
 			}
 		}
 
@@ -637,7 +646,7 @@ func getLatestLexIntentVersion(conn *lexmodelbuildingservice.LexModelBuildingSer
 		input.NextToken = page.NextToken
 	}
 
-	return version, nil
+	return strconv.Itoa(version), nil
 }
 
 func flattenLexCodeHook(hook *lexmodelbuildingservice.CodeHook) (flattened []map[string]interface{}) {