diff --git a/NEWS b/NEWS
index c2dec7e18b2..fe5e02f02a6 100644
--- a/NEWS
+++ b/NEWS
@@ -30,6 +30,10 @@ PHP                                                                        NEWS
 - Hash:
   . Fixed bug #81714 (segfault when serializing finalized HashContext). (cmb)
 
+- Iconv:
+  . Fixed bug GH-8218 (ob_end_clean does not reset Content-Encoding header).
+    (cmb)
+
 - Intl:
   . Fixed bug GH-8364 (msgfmt_format $values may not support references). (cmb)
 
@@ -50,6 +54,10 @@ PHP                                                                        NEWS
   . Fixed php://temp does not preserve file-position when switched to temporary
     file. (Bernd Holzmüller)
 
+- zlib:
+  . Fixed bug GH-8218 (ob_end_clean does not reset Content-Encoding header).
+    (cmb)
+
 14 Apr 2022, PHP 8.1.5
 
 - Core:
diff --git a/ext/iconv/iconv.c b/ext/iconv/iconv.c
index 39de76a5e42..f05e58aa1d9 100644
--- a/ext/iconv/iconv.c
+++ b/ext/iconv/iconv.c
@@ -311,7 +311,7 @@ static int php_iconv_output_handler(void **nothing, php_output_context *output_c
 			mimetype = SG(default_mimetype) ? SG(default_mimetype) : SAPI_DEFAULT_MIMETYPE;
 		}
 
-		if (mimetype != NULL && (!(output_context->op & PHP_OUTPUT_HANDLER_CLEAN) || (output_context->op & PHP_OUTPUT_HANDLER_START))) {
+		if (mimetype != NULL && (!(output_context->op & PHP_OUTPUT_HANDLER_CLEAN) || ((output_context->op & PHP_OUTPUT_HANDLER_START) && !(output_context->op & PHP_OUTPUT_HANDLER_FINAL)))) {
 			size_t len;
 			char *p = strstr(get_output_encoding(), "//");
 
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c
index 09188dc7694..a53fb2acc45 100644
--- a/ext/zlib/zlib.c
+++ b/ext/zlib/zlib.c
@@ -281,7 +281,7 @@ static int php_zlib_output_handler(void **handler_context, php_output_context *o
 		return FAILURE;
 	}
 
-	if (!(output_context->op & PHP_OUTPUT_HANDLER_CLEAN) || (output_context->op & PHP_OUTPUT_HANDLER_START)) {
+	if (!(output_context->op & PHP_OUTPUT_HANDLER_CLEAN) || ((output_context->op & PHP_OUTPUT_HANDLER_START) && !(output_context->op & PHP_OUTPUT_HANDLER_FINAL))) {
 		int flags;
 
 		if (SUCCESS == php_output_handler_hook(PHP_OUTPUT_HANDLER_HOOK_GET_FLAGS, &flags)) {