diff --git a/CHANGES b/CHANGES
index 9a58e9b..8c4233d 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,8 @@
 v1.0.x - YYYY-MMM-DD (To be released)
 --------------------
 
+ - Support http protocol versions besides 0.9, 1.0, 1.1, 2.0
+   [Issue #224 - @HQuest, @martinhsv]
  - Support for building with nginx configured with PCRE2
    [Issue #260 - @defanator]
 
diff --git a/src/ngx_http_modsecurity_rewrite.c b/src/ngx_http_modsecurity_rewrite.c
index f6f8d41..ebf115e 100644
--- a/src/ngx_http_modsecurity_rewrite.c
+++ b/src/ngx_http_modsecurity_rewrite.c
@@ -138,7 +138,15 @@ ngx_http_modsecurity_rewrite_handler(ngx_http_request_t *r)
                 break;
 #endif
             default :
-                http_version = "1.0";
+                http_version = ngx_str_to_char(r->http_protocol, r->pool);
+                if (http_version == (char*)-1) {
+                    return NGX_HTTP_INTERNAL_SERVER_ERROR;
+                }
+                if ((http_version != NULL) && (strlen(http_version) > 5) && (!strncmp("HTTP/", http_version, 5))) {
+                    http_version += 5;
+                } else {
+                    http_version = "1.0";
+                }
                 break;
         }