diff --git a/Include/pyport.h b/Include/pyport.h
index 93250f4eb1d..b3b8b6f09af 100644
--- a/Include/pyport.h
+++ b/Include/pyport.h
@@ -439,11 +439,6 @@ Please be conservative with adding new ones, document them and enclose them
 in platform-specific #ifdefs.
 **************************************************************************/
 
-#ifdef SOLARIS
-/* Unchecked */
-extern int gethostname(char *, int);
-#endif
-
 #ifdef HAVE__GETPTY
 #include <sys/types.h>          /* we need to import mode_t */
 extern char * _getpty(int *, int, mode_t, int);
diff --git a/Misc/NEWS.d/next/Build/2023-09-02-18-04-15.gh-issue-63760.r8hJ6q.rst b/Misc/NEWS.d/next/Build/2023-09-02-18-04-15.gh-issue-63760.r8hJ6q.rst
new file mode 100644
index 00000000000..9a7249e923e
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2023-09-02-18-04-15.gh-issue-63760.r8hJ6q.rst
@@ -0,0 +1,3 @@
+Fix Solaris build: no longer redefine the ``gethostname()`` function. Solaris
+defines the function since 2005. Patch by Victor Stinner, original patch by
+Jakub Kulík.