diff --git a/devel/undead/files/patch-src_undead_stream.d b/devel/undead/files/patch-src_undead_stream.d
index c128453b4213..af7cd76cdea5 100644
--- a/devel/undead/files/patch-src_undead_stream.d
+++ b/devel/undead/files/patch-src_undead_stream.d
@@ -1,84 +1,85 @@
---- src/undead/stream.d.orig	2026-09-19 09:27:35 UTC
+--- src/undead/stream.d.orig	2026-09-29 12:09:09 UTC
 +++ src/undead/stream.d
 @@ -230,7 +230,9 @@ interface InputStream {
     * --------------------------
     */
    int vreadf(TypeInfo[] arguments, va_list args);
 -  int readf(...); /// ditto
 +  final int readf(...) { /// ditto
 +    return vreadf(_arguments, _argptr);
 +  }
  
    /// Retrieve the number of bytes available for immediate reading.
    @property size_t available();
-@@ -333,15 +335,25 @@ interface OutputStream {
+@@ -333,7 +335,13 @@ interface OutputStream {
     * returning the number of bytes written.
     */
    size_t vprintf(const(char)[] format, va_list args);
 -  size_t printf(const(char)[] format, ...);    /// ditto
 +  final size_t printf(const(char)[] format, ...) {    /// ditto
 +    va_list ap;
 +    va_start(ap, format);
 +    auto result = vprintf(format, ap);
 +    va_end(ap);
 +    return result;
 +  }
  
    /***
     * Print a formatted string into the stream using writef-style syntax.
-    * References: <a href="std_format.html">std.format</a>.
-    * Returns: self to chain with other stream commands like flush.
+@@ -343,8 +351,12 @@ interface OutputStream {
+    * NOTE: not supported in GDC, since it uses features unimplemented in that
+    * compiler.
     */
 -  OutputStream writef(...);
 -  OutputStream writefln(...); /// ditto
 +  final OutputStream writef(...) {
 +    return writefx(_arguments,_argptr,0);
 +  }
 +  final OutputStream writefln(...) { /// ditto
 +    return writefx(_arguments,_argptr,1);
 +  }
    OutputStream writefx(TypeInfo[] arguments, va_list argptr, int newline = false);  /// ditto
  
    void flush(); /// Flush pending output if appropriate.
-@@ -1048,10 +1060,6 @@ class Stream : InputStream, OutputStream {
+@@ -1051,10 +1063,6 @@ class Stream : InputStream, OutputStream {
      return count;
    }
  
 -  int readf(...) {
 -    return vreadf(_arguments, _argptr);
 -  }
 -
    // returns estimated number of bytes available for immediate reading
    @property size_t available() { return 0; }
  
-@@ -1178,30 +1186,10 @@ class Stream : InputStream, OutputStream {
+@@ -1181,30 +1189,10 @@ class Stream : InputStream, OutputStream {
      return count;
    }
  
 -  // writes data to stream using printf() syntax,
 -  // returns number of bytes written
 -  size_t printf(const(char)[] format, ...) {
 -    va_list ap;
 -    va_start(ap, format);
 -    auto result = vprintf(format, ap);
 -    va_end(ap);
 -    return result;
 -  }
 -
    private void doFormatCallback(dchar c) {
      char[4] buf;
      auto b = undead.utf.toUTF8(buf, c);
      writeString(b);
 -  }
 -
 -  // writes data to stream using writef() syntax,
 -  OutputStream writef(...) {
 -    return writefx(_arguments,_argptr,0);
 -  }
 -
 -  // writes data with trailing newline
 -  OutputStream writefln(...) {
 -    return writefx(_arguments,_argptr,1);
    }
  
    // writes data with optional trailing newline