diff --git a/Misc/ACKS b/Misc/ACKS
index 73afc97..e36e626 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -717,6 +717,7 @@
 Andy Robinson
 Kevin Rodgers
 Giampaolo Rodola
+Adi Roiban
 Mike Romberg
 Armin Ronacher
 Case Roole
diff --git a/Misc/NEWS b/Misc/NEWS
index f4da7e7..8aa7315 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -94,6 +94,8 @@
 Build
 -----
 
+- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.
+
 - Issue #14437: Fix building the _io module under Cygwin.
 
 
diff --git a/setup.py b/setup.py
index 2c1473c..064bbc0 100644
--- a/setup.py
+++ b/setup.py
@@ -451,6 +451,10 @@
         if platform in ['osf1', 'unixware7', 'openunix8']:
             lib_dirs += ['/usr/ccs/lib']
 
+        # HP-UX11iv3 keeps files in lib/hpux folders.
+        if platform == 'hp-ux11':
+            lib_dirs += ['/usr/lib/hpux64', '/usr/lib/hpux32']
+
         if platform == 'darwin':
             # This should work on any unixy platform ;-)
             # If the user has bothered specifying additional -I and -L flags