diff --git a/Makefile.in b/Makefile.in
index 2eca4ed..3905aa6 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -158,7 +158,8 @@
 CSCOPE = cscope
 DIST_SUBDIRS = mingw-w64-headers mingw-w64-crt \
 	mingw-w64-libraries/libmangle mingw-w64-libraries/pseh \
-	mingw-w64-tools/gendef mingw-w64-tools/genidl
+	mingw-w64-libraries/winpthreads mingw-w64-tools/gendef \
+	mingw-w64-tools/genidl
 am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.h.in \
 	$(top_srcdir)/build-aux/config.guess \
 	$(top_srcdir)/build-aux/config.sub \
@@ -295,9 +296,10 @@
 @CRT_TRUE@MAYBE_CRT = mingw-w64-crt
 @LIBRARIES_MANGLE_TRUE@MAYBE_LIBRARIES_MANGLE = mingw-w64-libraries/libmangle
 @LIBRARIES_PSEH_TRUE@MAYBE_LIBRARIES_PSEH = mingw-w64-libraries/pseh
+@LIBRARIES_WINPTHREADS_TRUE@MAYBE_LIBRARIES_WINPTHREADS = mingw-w64-libraries/winpthreads
 @TOOLS_GENDEF_TRUE@MAYBE_TOOLS_GENDEF = mingw-w64-tools/gendef
 @TOOLS_GENIDL_TRUE@MAYBE_TOOLS_GENIDL = mingw-w64-tools/genidl
-SUBDIRS = $(MAYBE_HEADER) $(MAYBE_CRT) $(MAYBE_LIBRARIES_MANGLE) $(MAYBE_LIBRARIES_PSEH) $(MAYBE_TOOLS_GENDEF) $(MAYBE_TOOLS_GENIDL)
+SUBDIRS = $(MAYBE_HEADER) $(MAYBE_CRT) $(MAYBE_LIBRARIES_MANGLE) $(MAYBE_LIBRARIES_PSEH) $(MAYBE_LIBRARIES_WINPTHREADS) $(MAYBE_TOOLS_GENDEF) $(MAYBE_TOOLS_GENIDL)
 DISTCHECK_CONFIGURE_FLAGS = --with-headers --with-crt --with-libraries=all --with-tools=all
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-recursive