diff --git a/go.mod b/go.mod
index 01b1d4b..53087e3 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module aws-sigv4-proxy
 go 1.22.4
 
 require (
-	github.com/aws/aws-sdk-go v1.54.19
+	github.com/aws/aws-sdk-go v1.54.20
 	github.com/sirupsen/logrus v1.9.3
 	github.com/stretchr/testify v1.8.4
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
diff --git a/go.sum b/go.sum
index e3b6a22..c03277f 100644
--- a/go.sum
+++ b/go.sum
@@ -2,8 +2,8 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafo
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20231202071711-9a357b53e9c9 h1:ez/4by2iGztzR4L0zgAOR8lTQK9VlyBVVd7G4omaOQs=
 github.com/alecthomas/units v0.0.0-20231202071711-9a357b53e9c9/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
-github.com/aws/aws-sdk-go v1.54.19 h1:tyWV+07jagrNiCcGRzRhdtVjQs7Vy41NwsuOcl0IbVI=
-github.com/aws/aws-sdk-go v1.54.19/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
+github.com/aws/aws-sdk-go v1.54.20 h1:FZ2UcXya7bUkvkpf7TaPmiL7EubK0go1nlXGLRwEsoo=
+github.com/aws/aws-sdk-go v1.54.20/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
diff --git a/vendor/github.com/aws/aws-sdk-go/aws/endpoints/defaults.go b/vendor/github.com/aws/aws-sdk-go/aws/endpoints/defaults.go
index 84dc7dc..6f5247f 100644
--- a/vendor/github.com/aws/aws-sdk-go/aws/endpoints/defaults.go
+++ b/vendor/github.com/aws/aws-sdk-go/aws/endpoints/defaults.go
@@ -13068,6 +13068,9 @@ var awsPartition = partition{
 				endpointKey{
 					Region: "eu-central-1",
 				}: endpoint{},
+				endpointKey{
+					Region: "eu-central-2",
+				}: endpoint{},
 				endpointKey{
 					Region: "eu-north-1",
 				}: endpoint{},
@@ -22522,6 +22525,9 @@ var awsPartition = partition{
 				}: endpoint{
 					Hostname: "network-firewall-fips.ca-central-1.amazonaws.com",
 				},
+				endpointKey{
+					Region: "ca-west-1",
+				}: endpoint{},
 				endpointKey{
 					Region: "eu-central-1",
 				}: endpoint{},
@@ -24479,6 +24485,14 @@ var awsPartition = partition{
 						Region: "ca-central-1",
 					},
 				},
+				endpointKey{
+					Region: "ca-west-1",
+				}: endpoint{
+					Hostname: "portal.sso.ca-west-1.amazonaws.com",
+					CredentialScope: credentialScope{
+						Region: "ca-west-1",
+					},
+				},
 				endpointKey{
 					Region: "eu-central-1",
 				}: endpoint{
@@ -33621,6 +33635,20 @@ var awsPartition = partition{
 				}: endpoint{},
 			},
 		},
+		"tax": service{
+			PartitionEndpoint: "aws-global",
+			IsRegionalized:    boxedFalse,
+			Endpoints: serviceEndpoints{
+				endpointKey{
+					Region: "aws-global",
+				}: endpoint{
+					Hostname: "tax.us-east-1.amazonaws.com",
+					CredentialScope: credentialScope{
+						Region: "us-east-1",
+					},
+				},
+			},
+		},
 		"textract": service{
 			Endpoints: serviceEndpoints{
 				endpointKey{
@@ -40969,20 +40997,40 @@ var awsusgovPartition = partition{
 		"directconnect": service{
 			Endpoints: serviceEndpoints{
 				endpointKey{
-					Region: "us-gov-east-1",
+					Region: "fips-us-gov-east-1",
 				}: endpoint{
-					Hostname: "directconnect.us-gov-east-1.amazonaws.com",
+					Hostname: "directconnect-fips.us-gov-east-1.amazonaws.com",
 					CredentialScope: credentialScope{
 						Region: "us-gov-east-1",
 					},
+					Deprecated: boxedTrue,
 				},
 				endpointKey{
-					Region: "us-gov-west-1",
+					Region: "fips-us-gov-west-1",
 				}: endpoint{
-					Hostname: "directconnect.us-gov-west-1.amazonaws.com",
+					Hostname: "directconnect-fips.us-gov-west-1.amazonaws.com",
 					CredentialScope: credentialScope{
 						Region: "us-gov-west-1",
 					},
+					Deprecated: boxedTrue,
+				},
+				endpointKey{
+					Region: "us-gov-east-1",
+				}: endpoint{},
+				endpointKey{
+					Region:  "us-gov-east-1",
+					Variant: fipsVariant,
+				}: endpoint{
+					Hostname: "directconnect-fips.us-gov-east-1.amazonaws.com",
+				},
+				endpointKey{
+					Region: "us-gov-west-1",
+				}: endpoint{},
+				endpointKey{
+					Region:  "us-gov-west-1",
+					Variant: fipsVariant,
+				}: endpoint{
+					Hostname: "directconnect-fips.us-gov-west-1.amazonaws.com",
 				},
 			},
 		},
diff --git a/vendor/github.com/aws/aws-sdk-go/aws/version.go b/vendor/github.com/aws/aws-sdk-go/aws/version.go
index b2040b0..a970f4e 100644
--- a/vendor/github.com/aws/aws-sdk-go/aws/version.go
+++ b/vendor/github.com/aws/aws-sdk-go/aws/version.go
@@ -5,4 +5,4 @@ package aws
 const SDKName = "aws-sdk-go"
 
 // SDKVersion is the version of this SDK
-const SDKVersion = "1.54.19"
+const SDKVersion = "1.54.20"
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 33cafbb..d784fbb 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -5,7 +5,7 @@ github.com/alecthomas/template/parse
 # github.com/alecthomas/units v0.0.0-20231202071711-9a357b53e9c9
 ## explicit; go 1.15
 github.com/alecthomas/units
-# github.com/aws/aws-sdk-go v1.54.19
+# github.com/aws/aws-sdk-go v1.54.20
 ## explicit; go 1.19
 github.com/aws/aws-sdk-go/aws
 github.com/aws/aws-sdk-go/aws/auth/bearer