diff --git a/ca/ca.go b/ca/ca.go
index ab4a1a9b..6967ede9 100644
--- a/ca/ca.go
+++ b/ca/ca.go
@@ -476,6 +476,20 @@ func (ca *CA) Run() error {
 	// wait till error occurs; ensures the servers keep listening
 	err := <-errs
 
+	// if the error is not the usual HTTP server closed error, it is
+	// highly likely that an error occurred when starting one of the
+	// CA servers, possibly because of a port already being in use or
+	// some part of the configuration not being correct. This case is
+	// handled by stopping the CA in its entirety.
+	if !errors.Is(err, http.ErrServerClosed) {
+		log.Println("shutting down due to startup error ...")
+		if stopErr := ca.Stop(); stopErr != nil {
+			err = fmt.Errorf("failed stopping CA after error occurred: %w: %w", err, stopErr)
+		} else {
+			err = fmt.Errorf("stopped CA after error occurred: %w", err)
+		}
+	}
+
 	wg.Wait()
 
 	return err
diff --git a/go.mod b/go.mod
index ca7885d5..449d0318 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	github.com/dgraph-io/badger v1.6.2
 	github.com/dgraph-io/badger/v2 v2.2007.4
 	github.com/fxamacker/cbor/v2 v2.6.0
-	github.com/go-chi/chi/v5 v5.0.11
+	github.com/go-chi/chi/v5 v5.0.12
 	github.com/go-jose/go-jose/v3 v3.0.2
 	github.com/golang/mock v1.6.0
 	github.com/google/go-cmp v0.6.0
@@ -41,7 +41,7 @@ require (
 	golang.org/x/net v0.21.0
 	google.golang.org/api v0.167.0
 	google.golang.org/grpc v1.62.0
-	google.golang.org/protobuf v1.32.0
+	google.golang.org/protobuf v1.33.0
 )
 
 require (
diff --git a/go.sum b/go.sum
index a23426b5..39bbf8f8 100644
--- a/go.sum
+++ b/go.sum
@@ -210,8 +210,8 @@ github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMo
 github.com/fxamacker/cbor/v2 v2.6.0 h1:sU6J2usfADwWlYDAFhZBQ6TnLFBHxgesMrQfQgk1tWA=
 github.com/fxamacker/cbor/v2 v2.6.0/go.mod h1:pxXPTn3joSm21Gbwsv0w9OSA2y1HFR9qXEeXQVeNoDQ=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
-github.com/go-chi/chi/v5 v5.0.11 h1:BnpYbFZ3T3S1WMpD79r7R5ThWX40TaFB7L31Y8xqSwA=
-github.com/go-chi/chi/v5 v5.0.11/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
+github.com/go-chi/chi/v5 v5.0.12 h1:9euLV5sTrTNTRUU9POmDUvfxyj6LAABLUcEWO+JJb4s=
+github.com/go-chi/chi/v5 v5.0.12/go.mod h1:DslCQbL2OYiznFReuXYUmQ2hGd1aDpCnlMNITLSKoi8=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -1161,8 +1161,8 @@ google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp0
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
-google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=