diff --git a/pkg/httpassert/README.md b/pkg/httpassert/README.md
index c8d0eb0..4da4918 100644
--- a/pkg/httpassert/README.md
+++ b/pkg/httpassert/README.md
@@ -12,10 +12,12 @@ import "github.com/greenbone/opensight-golang-libraries/pkg/httpassert"
 
 - [Constants](<#constants>)
 - [type Extractor](<#Extractor>)
+  - [func ExtractRegexTo\(value string, ptr any\) Extractor](<#ExtractRegexTo>)
   - [func ExtractTo\(ptr any\) Extractor](<#ExtractTo>)
 - [type Matcher](<#Matcher>)
   - [func Contains\(v string\) Matcher](<#Contains>)
   - [func HasSize\(e int\) Matcher](<#HasSize>)
+  - [func Regex\(expr string\) Matcher](<#Regex>)
 - [type Request](<#Request>)
   - [func New\(t \*testing.T, router http.Handler\) Request](<#New>)
 - [type Response](<#Response>)
@@ -30,7 +32,7 @@ const IgnoreJsonValue = "<IGNORE>"
 ```
 
 <a name="Extractor"></a>
-## type [Extractor](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/extracter.go#L15>)
+## type [Extractor](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/extracter.go#L16>)
 
 
 
@@ -38,8 +40,17 @@ const IgnoreJsonValue = "<IGNORE>"
 type Extractor func(t *testing.T, actual any) any
 ```
 
+<a name="ExtractRegexTo"></a>
+### func [ExtractRegexTo](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/extracter.go#L29>)
+
+```go
+func ExtractRegexTo(value string, ptr any) Extractor
+```
+
+
+
 <a name="ExtractTo"></a>
-### func [ExtractTo](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/extracter.go#L22>)
+### func [ExtractTo](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/extracter.go#L23>)
 
 ```go
 func ExtractTo(ptr any) Extractor
@@ -53,7 +64,7 @@ request.Expect().JsonPath("$.data.id", httpassert.ExtractTo(&id))
 ```
 
 <a name="Matcher"></a>
-## type [Matcher](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/matcher.go#L14>)
+## type [Matcher](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/matcher.go#L15>)
 
 
 
@@ -62,7 +73,7 @@ type Matcher func(t *testing.T, actual any) bool
 ```
 
 <a name="Contains"></a>
-### func [Contains](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/matcher.go#L42>)
+### func [Contains](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/matcher.go#L43>)
 
 ```go
 func Contains(v string) Matcher
@@ -71,7 +82,7 @@ func Contains(v string) Matcher
 Contains checks if a string contains the value Example: ExpectJsonPath\("$.data.name", httpassert.Contains\("foo"\)\)
 
 <a name="HasSize"></a>
-### func [HasSize](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/matcher.go#L18>)
+### func [HasSize](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/matcher.go#L19>)
 
 ```go
 func HasSize(e int) Matcher
@@ -79,6 +90,15 @@ func HasSize(e int) Matcher
 
 HasSize checks the length of arrays, maps, or strings. Example: ExpectJsonPath\("$.data", httpassert.HasSize\(11\)\)
 
+<a name="Regex"></a>
+### func [Regex](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/matcher.go#L52>)
+
+```go
+func Regex(expr string) Matcher
+```
+
+Regex checks if a string matches the given regular expression Example: ExpectJsonPath\("$.data.name", httpassert.Regex\("^foo.\*bar$"\)\)
+
 <a name="Request"></a>
 ## type [Request](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/request.go#L23-L55>)
 
@@ -130,7 +150,7 @@ func New(t *testing.T, router http.Handler) Request
 New returns a new Request instance for the given router.
 
 <a name="Response"></a>
-## type [Response](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/response.go#L24-L44>)
+## type [Response](<https://github.com/greenbone/opensight-golang-libraries/blob/main/pkg/httpassert/response.go#L24-L46>)
 
 nolint:interfacebloat Response interface provides fluent response assertions.
 
@@ -150,6 +170,8 @@ type Response interface {
     JsonTemplateFile(path string, values map[string]any) Response
     JsonFile(path string) Response
 
+    Header(name string, value any) Response
+
     Body(body string) Response
     GetJsonBodyObject(target any) Response
     GetBody() string
diff --git a/pkg/httpassert/request.go b/pkg/httpassert/request.go
index cfd45d6..260a71f 100644
--- a/pkg/httpassert/request.go
+++ b/pkg/httpassert/request.go
@@ -70,17 +70,17 @@ type request struct {
 
 func (m *request) Perform(verb string, path string) Request {
 	switch verb {
-	case "Post":
+	case "Post", http.MethodPost:
 		return m.Post(path)
-	case "Put":
+	case "Put", http.MethodPut:
 		return m.Put(path)
-	case "Get":
+	case "Get", http.MethodGet:
 		return m.Get(path)
-	case "Delete":
+	case "Delete", http.MethodDelete:
 		return m.Delete(path)
-	case "Options":
+	case "Options", http.MethodOptions:
 		return m.Options(path)
-	case "Patch":
+	case "Patch", http.MethodPatch:
 		return m.Patch(path)
 	default:
 		m.t.Fatalf("unknown verb: %s", verb)
@@ -90,17 +90,17 @@ func (m *request) Perform(verb string, path string) Request {
 
 func (m *request) Performf(verb string, path string, a ...interface{}) Request {
 	switch verb {
-	case "Post":
+	case "Post", http.MethodPost:
 		return m.Postf(path, a...)
-	case "Put":
+	case "Put", http.MethodPut:
 		return m.Putf(path, a...)
-	case "Get":
+	case "Get", http.MethodGet:
 		return m.Getf(path, a...)
-	case "Delete":
+	case "Delete", http.MethodDelete:
 		return m.Deletef(path, a...)
-	case "Options":
+	case "Options", http.MethodOptions:
 		return m.Optionsf(path, a...)
-	case "Patch":
+	case "Patch", http.MethodPatch:
 		return m.Patchf(path, a...)
 	default:
 		m.t.Fatalf("unknown verb: %s", verb)
diff --git a/pkg/httpassert/request_test.go b/pkg/httpassert/request_test.go
index c28a133..867672e 100644
--- a/pkg/httpassert/request_test.go
+++ b/pkg/httpassert/request_test.go
@@ -65,6 +65,23 @@ func TestRequestPerform(t *testing.T) {
 		"Options": {
 			verb: "Options",
 		},
+		"Get (all caps)": {
+			verb: http.MethodGet,
+		},
+		"Post (all caps)": {
+			verb:    http.MethodPost,
+			content: `{}`,
+		},
+		"Put (all caps)": {
+			verb:    http.MethodPut,
+			content: `{}`,
+		},
+		"Delete (all caps)": {
+			verb: http.MethodDelete,
+		},
+		"Options (all caps)": {
+			verb: http.MethodOptions,
+		},
 	}
 
 	for name, tc := range tests {