diff --git a/subjects/mobile-dev/chess/resources/go.mod b/subjects/mobile-dev/chess/resources/go.mod
index 384741e7ea..fb65c8fb3c 100644
--- a/subjects/mobile-dev/chess/resources/go.mod
+++ b/subjects/mobile-dev/chess/resources/go.mod
@@ -5,7 +5,7 @@ go 1.19
 require (
 	github.com/google/uuid v1.3.0
 	github.com/gorilla/mux v1.8.0
-	github.com/gorilla/websocket v1.5.0
+	github.com/gorilla/websocket v1.5.3
 )
 
 require github.com/notnil/chess v1.9.0
diff --git a/subjects/mobile-dev/chess/resources/go.sum b/subjects/mobile-dev/chess/resources/go.sum
index 58ac2fd9ae..61e20ae24a 100644
--- a/subjects/mobile-dev/chess/resources/go.sum
+++ b/subjects/mobile-dev/chess/resources/go.sum
@@ -1,10 +1,9 @@
-github.com/ajstarks/svgo v0.0.0-20200320125537-f189e35d30ca h1:kWzLcty5V2rzOqJM7Tp/MfSX0RMSI1x4IOLApEefYxA=
 github.com/ajstarks/svgo v0.0.0-20200320125537-f189e35d30ca/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
-github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
-github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
+github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/notnil/chess v1.9.0 h1:YMxR5kUVjtwcuFptGU0/3q7eG3MSHQNbg0VUekvRKV0=
 github.com/notnil/chess v1.9.0/go.mod h1:cRuJUIBFq9Xki05TWHJxHYkC+fFpq45IWwk94DdlCrA=