diff --git a/067-http-client-basic/http-client-basic.go b/067-http-client-basic/http-client-basic.go
deleted file mode 100644
index 06531cc..0000000
--- a/067-http-client-basic/http-client-basic.go
+++ /dev/null
@@ -1,18 +0,0 @@
-// ## HTTP Client Basic Auth
-
-package main
-
-import "net/http"
-import "io/ioutil"
-import "fmt"
-
-func main() {
-	req, _ := http.NewRequest("GET", "http://127.0.0.1:5000/", nil)
-	req.SetBasicAuth("u", "supersecret")
-	res, resErr := http.DefaultClient.Do(req)
-	if resErr != nil { panic(resErr) }
-	defer res.Body.Close()
-	body, bodyErr := ioutil.ReadAll(res.Body)
-	if bodyErr != nil { panic(bodyErr) }
-	fmt.Print(string(body))
-}
diff --git a/068-https-client/https-client.go b/067-https-client/https-client.go
similarity index 100%
rename from 068-https-client/https-client.go
rename to 067-https-client/https-client.go
diff --git a/069-redis/redis.go b/068-redis/redis.go
similarity index 100%
rename from 069-redis/redis.go
rename to 068-redis/redis.go
diff --git a/069-redis/redis.sh b/068-redis/redis.sh
similarity index 100%
rename from 069-redis/redis.sh
rename to 068-redis/redis.sh
diff --git a/070-postgres/postgres.go b/069-postgres/postgres.go
similarity index 100%
rename from 070-postgres/postgres.go
rename to 069-postgres/postgres.go
diff --git a/070-postgres/postgres.sh b/069-postgres/postgres.sh
similarity index 100%
rename from 070-postgres/postgres.sh
rename to 069-postgres/postgres.sh
diff --git a/071-sending-email/sending-email.go b/070-sending-email/sending-email.go
similarity index 100%
rename from 071-sending-email/sending-email.go
rename to 070-sending-email/sending-email.go
diff --git a/072-hello-web/hello-web.go b/071-hello-web/hello-web.go
similarity index 100%
rename from 072-hello-web/hello-web.go
rename to 071-hello-web/hello-web.go
diff --git a/073-responses/responses.go b/072-responses/responses.go
similarity index 100%
rename from 073-responses/responses.go
rename to 072-responses/responses.go
diff --git a/073-responses/responses.sh b/072-responses/responses.sh
similarity index 100%
rename from 073-responses/responses.sh
rename to 072-responses/responses.sh
diff --git a/074-request-routing/request-routing.go b/073-request-routing/request-routing.go
similarity index 100%
rename from 074-request-routing/request-routing.go
rename to 073-request-routing/request-routing.go
diff --git a/074-request-routing/request-routing.sh b/073-request-routing/request-routing.sh
similarity index 100%
rename from 074-request-routing/request-routing.sh
rename to 073-request-routing/request-routing.sh
diff --git a/075-request-logging/request-logging.go b/074-request-logging/request-logging.go
similarity index 100%
rename from 075-request-logging/request-logging.go
rename to 074-request-logging/request-logging.go
diff --git a/076-static-content/static-content.go b/075-static-content/static-content.go
similarity index 100%
rename from 076-static-content/static-content.go
rename to 075-static-content/static-content.go
diff --git a/076-static-content/static-content.sh b/075-static-content/static-content.sh
similarity index 100%
rename from 076-static-content/static-content.sh
rename to 075-static-content/static-content.sh
diff --git a/077-basic-authentication/basic-authentication.go b/076-basic-authentication/basic-authentication.go
similarity index 100%
rename from 077-basic-authentication/basic-authentication.go
rename to 076-basic-authentication/basic-authentication.go
diff --git a/078-canonical-hosts/canonical-hosts.go b/077-canonical-hosts/canonical-hosts.go
similarity index 100%
rename from 078-canonical-hosts/canonical-hosts.go
rename to 077-canonical-hosts/canonical-hosts.go
diff --git a/078-canonical-hosts/canonical-hosts.sh b/077-canonical-hosts/canonical-hosts.sh
similarity index 100%
rename from 078-canonical-hosts/canonical-hosts.sh
rename to 077-canonical-hosts/canonical-hosts.sh
diff --git a/079-middleware/middleware.go b/078-middleware/middleware.go
similarity index 100%
rename from 079-middleware/middleware.go
rename to 078-middleware/middleware.go
diff --git a/080-graceful-shutdown/graceful-shutdown.go b/079-graceful-shutdown/graceful-shutdown.go
similarity index 100%
rename from 080-graceful-shutdown/graceful-shutdown.go
rename to 079-graceful-shutdown/graceful-shutdown.go
diff --git a/080-graceful-shutdown/graceful-shutdown.sh b/079-graceful-shutdown/graceful-shutdown.sh
similarity index 100%
rename from 080-graceful-shutdown/graceful-shutdown.sh
rename to 079-graceful-shutdown/graceful-shutdown.sh
diff --git a/tool/index.txt b/tool/index.txt
index 6f451c5..e142bac 100644
--- a/tool/index.txt
+++ b/tool/index.txt
@@ -84,7 +84,6 @@ exit
 
 ## client libraries
 http-client
-http-client-basic
 https-client
 streaming-in-http-responses ~
 redis