diff --git a/Makefile b/Makefile
index da9ad9b3..b0fdc07d 100644
--- a/Makefile
+++ b/Makefile
@@ -92,7 +92,7 @@ conformance-test:
 
 conformance-binary: $(OUTPUT_DIRNAME)/conformance.test
 
-TEST_REGISTRY_CONTAINER ?= ghcr.io/project-zot/zot-minimal-linux-amd64:v2.0.4@sha256:0312c23d9658b912a0d4db5c6ecd6d4391c1211912f10de3e9a52685f000318a
+TEST_REGISTRY_CONTAINER ?= ghcr.io/project-zot/zot-minimal-linux-amd64:v2.1.7@sha256:2114797f00696011f38cc94c72f5773c84b1036562df5034d05ea19075179ad1
 registry-ci:
 	docker rm -f oci-conformance && \
 		mkdir -p $(OUTPUT_DIRNAME) && \
diff --git a/conformance/02_push_test.go b/conformance/02_push_test.go
index 13845386..09a81f90 100644
--- a/conformance/02_push_test.go
+++ b/conformance/02_push_test.go
@@ -237,6 +237,7 @@ var test02Push = func() {
 				Expect(err).To(BeNil())
 				location := resp.Header().Get("Location")
 				Expect(resp.StatusCode()).To(Equal(http.StatusAccepted))
+				Expect(resp.Header().Get("Range")).To(Equal(fmt.Sprintf("0-%d", len(testBlobB)-1)))
 				Expect(location).ToNot(BeEmpty())
 				lastResponse = resp
 			})
diff --git a/spec.md b/spec.md
index ad364d32..e60ce813 100644
--- a/spec.md
+++ b/spec.md
@@ -368,7 +368,7 @@ The `<length>` is the content-length, in bytes, of the current chunk.
 If the registry provides an `OCI-Chunk-Min-Length` header in the `POST` response, the size of each chunk, except for the final chunk, SHOULD be greater or equal to that value.
 The final chunk MAY have any length.
 
-Each successful chunk upload MUST have a `202 Accepted` response code, and MUST have the following headers:
+The response for each successful chunk upload MUST be `202 Accepted`, and MUST have the following headers:
 
 ```
 Location: <location>
@@ -377,7 +377,7 @@ Range: 0-<end-of-range>
 
 Each consecutive chunk upload SHOULD use the `<location>` provided in the response to the previous chunk upload.
 
-The `<end-of-range>` value is the position of the last uploaded byte.
+The `<end-of-range>` value is the position of the last uploaded byte of the blob, matching the end value of the `Content-Range` in the request.
 
 Chunks MUST be uploaded in order, with the first byte of a chunk being the last chunk's `<end-of-range>` plus one.
 If a chunk is uploaded out of order, the registry MUST respond with a `416 Requested Range Not Satisfiable` code.
@@ -424,7 +424,7 @@ Range: 0-<end-of-range>
 
 The following chunk upload SHOULD use the `<location>` provided in the response.
 
-The `<end-of-range>` value is the position of the last uploaded byte.
+The `<end-of-range>` value is the position of the last uploaded byte of the blob.
 
 ##### Mounting a blob from another repository