diff --git a/docs/src/index.md b/docs/src/index.md
index fe5d57e..3fa7098 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -9,7 +9,5 @@ The AWSAuth package implements AWS authentication.
 Currently this consists of AWS Signature v4 signing for HTTP requests sent to AWS.
 
 ```@docs
-AWSAuth.AWS4AuthLayer
-AWSAuth.SignatureV4.HTTP.request
 AWSAuth.SignatureV4.sign!
 ```
diff --git a/src/AWSAuth.jl b/src/AWSAuth.jl
index 9971d25..b83f538 100644
--- a/src/AWSAuth.jl
+++ b/src/AWSAuth.jl
@@ -1,6 +1,6 @@
 module AWSAuth
 
-export SignatureV4, AWS4AuthLayer
+export SignatureV4
 
 include("signaturev4.jl")
 
diff --git a/src/signaturev4.jl b/src/signaturev4.jl
index 82325c4..2819565 100644
--- a/src/signaturev4.jl
+++ b/src/signaturev4.jl
@@ -5,36 +5,10 @@ using Dates
 using HTTP
 using HTTP.Pairs
 using HTTP.URIs
-using HTTP: Headers, Layer, Request
+using HTTP: Headers
 using IniFile
 using MbedTLS
 
-export AWS4AuthLayer
-
-"""
-    AWS4AuthLayer{Next} <: HTTP.Layer
-
-Abstract type used by [`HTTP.request`](@ref) to add an
-[AWS Signature v4](http://docs.aws.amazon.com/general/latest/gr/signature-version-4.html)
-authentication layer to the request.
-"""
-abstract type AWS4AuthLayer{Next<:Layer} <: Layer end
-
-"""
-    HTTP.request(::Type{AWS4AuthLayer}, url::HTTP.URI, req::HTTP.Request, body) -> HTTP.Response
-
-Perform the given request, adding a layer of AWS authentication using
-[AWS Signature v4](http://docs.aws.amazon.com/general/latest/gr/signature-version-4.html).
-An "Authorization" header to the request.
-"""
-function HTTP.request(::Type{AWS4AuthLayer{Next}}, url::URI, req::Request, body; kw...) where Next
-    if !haskey(kw, :aws_access_key_id) && !haskey(ENV, "AWS_ACCESS_KEY_ID")
-        kw = merge(dot_aws_credentials(), kw)
-    end
-    sign!(req.method, url, req.headers, req.body; kw...)
-    return HTTP.request(Next, url, req, body; kw...)
-end
-
 # Normalize whitespace to the form required in the canonical headers.
 # Note that the expected format for multiline headers seems not to be explicitly
 # documented, but Amazon provides a test case for it, so we'll match that behavior.
@@ -212,4 +186,4 @@ function dot_aws_credentials()::NamedTuple
     return credentials
 end
 
-end # module AWS4AuthRequest
+end # module