diff --git a/CHANGES/+cache_api_response_content_type.bugfix b/CHANGES/+cache_api_response_content_type.bugfix
new file mode 100644
index 00000000000..314dc5afa06
--- /dev/null
+++ b/CHANGES/+cache_api_response_content_type.bugfix
@@ -0,0 +1 @@
+Fixed cache forgetting the Content-Type header of ApiResponses
diff --git a/pulpcore/cache/cache.py b/pulpcore/cache/cache.py
index 637bda94e12..4fdaf7d691f 100644
--- a/pulpcore/cache/cache.py
+++ b/pulpcore/cache/cache.py
@@ -217,6 +217,7 @@ def make_entry(self, key, base_key, handler, args, kwargs, expires=DEFAULT_EXPIR
             entry["type"] = "FileResponse"
         elif isinstance(response, ApiResponse):
             entry["data"] = response.data
+            entry["content_type"] = response.content_type
             entry["type"] = "APIResponse"
         elif isinstance(response, HttpResponse):
             entry["content"] = response.content.decode("utf-8")