diff --git a/dll/3rdparty/libxslt/Makefile.am b/dll/3rdparty/libxslt/Makefile.am
index d5d6a4cfe93..a2d766f5653 100644
--- a/dll/3rdparty/libxslt/Makefile.am
+++ b/dll/3rdparty/libxslt/Makefile.am
@@ -12,17 +12,15 @@ confexec_DATA = xsltConf.sh
 
 bin_SCRIPTS = xslt-config
 
-dist-hook: cleanup libxslt.spec
+dist-hook: cleanup
 	touch $(distdir)/doc/*.xml
 	touch $(distdir)/doc/EXSLT/*.xml
 	touch $(distdir)/libxslt/*.syms
 	(cd $(srcdir) ; tar -cf - win32 vms examples) | (cd $(distdir); tar xf -)
 
-EXTRA_DIST = xsltConf.sh.in xslt-config.in libxslt.spec libxslt.spec.in \
-             FEATURES TODO Copyright libxslt.m4 \
-	     win32/libxslt/libxslt.def win32/libxslt/libxslt.dsw \
-	     win32/libxslt/libxslt_so.dsp win32/libxslt/xsltproc.dsp \
-	     CMakeLists.txt config.h.cmake.in FindGcrypt.cmake libxslt-config.cmake.in libxslt-config.cmake.cmake.in
+EXTRA_DIST = xsltConf.sh.in \
+             FEATURES TODO Copyright \
+	     CMakeLists.txt config.h.cmake.in libxslt-config.cmake.in libxslt-config.cmake.cmake.in
 
 ## We create xsltConf.sh here and not from configure because we want
 ## to get the paths expanded correctly.  Macros like srcdir are given
@@ -73,8 +71,9 @@ pkgconfigdir=$(libdir)/pkgconfig
 pkgconfig_DATA = libxslt.pc libexslt.pc
 
 cmakedir = $(libdir)/cmake/libxslt
-cmake_DATA = FindGcrypt.cmake libxslt-config.cmake
+dist_cmake_DATA = FindGcrypt.cmake
+cmake_DATA = libxslt-config.cmake
 
 m4datadir = $(datadir)/aclocal
-m4data_DATA = libxslt.m4
+dist_m4data_DATA = libxslt.m4
 
diff --git a/dll/3rdparty/libxslt/NEWS b/dll/3rdparty/libxslt/NEWS
index 0f2dcd73710..dc97c2ca621 100644
--- a/dll/3rdparty/libxslt/NEWS
+++ b/dll/3rdparty/libxslt/NEWS
@@ -1,5 +1,19 @@
 NEWS file for libxslt
 
+v1.1.37: Aug 29 2022
+
+### Improvements
+
+- Don't use deprecated libxml2 macros
+- Don't mess with xmlDefaultSAXHandler
+
+### Build system
+
+- Require automake-1.16.3 or later
+- Remove generated files from distribution
+- Add missing compile definition for static builds to Autotools (Mike Dalessio)
+
+
 v1.1.36: Aug 17 2022
 
 ### Removals and deprecations
diff --git a/dll/3rdparty/libxslt/functions.c b/dll/3rdparty/libxslt/functions.c
index a053c1ce65d..5cd1b7c285d 100644
--- a/dll/3rdparty/libxslt/functions.c
+++ b/dll/3rdparty/libxslt/functions.c
@@ -587,7 +587,8 @@ xsltFormatNumberFunction(xmlXPathParserContextPtr ctxt, int nargs)
 
     switch (nargs) {
     case 3:
-	CAST_TO_STRING;
+        if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_STRING))
+            xmlXPathStringFunction(ctxt, 1);
 	decimalObj = valuePop(ctxt);
         ncname = xsltSplitQName(sheet->dict, decimalObj->stringval, &prefix);
         if (prefix != NULL) {
@@ -613,13 +614,16 @@ xsltFormatNumberFunction(xmlXPathParserContextPtr ctxt, int nargs)
 	}
 	/* Intentional fall-through */
     case 2:
-	CAST_TO_STRING;
+        if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_STRING))
+            xmlXPathStringFunction(ctxt, 1);
 	formatObj = valuePop(ctxt);
-	CAST_TO_NUMBER;
+        if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_NUMBER))
+            xmlXPathNumberFunction(ctxt, 1);
 	numberObj = valuePop(ctxt);
 	break;
     default:
-	XP_ERROR(XPATH_INVALID_ARITY);
+	xmlXPathErr(ctxt, XPATH_INVALID_ARITY);
+        return;
     }
 
     if (formatValues != NULL) {
diff --git a/dll/3rdparty/libxslt/keys.c b/dll/3rdparty/libxslt/keys.c
index 4215cb38e85..25adeb260f0 100644
--- a/dll/3rdparty/libxslt/keys.c
+++ b/dll/3rdparty/libxslt/keys.c
@@ -292,7 +292,7 @@ xsltAddKey(xsltStylesheetPtr style, const xmlChar *name,
     current = end = 0;
     while (match[current] != 0) {
 	start = current;
-	while (IS_BLANK_CH(match[current]))
+	while (xmlIsBlank_ch(match[current]))
 	    current++;
 	end = current;
 	while ((match[end] != 0) && (match[end] != '|')) {
diff --git a/dll/3rdparty/libxslt/numbers.c b/dll/3rdparty/libxslt/numbers.c
index eee53d56227..d737221ec8c 100644
--- a/dll/3rdparty/libxslt/numbers.c
+++ b/dll/3rdparty/libxslt/numbers.c
@@ -75,6 +75,12 @@ xsltUTF8Charcmp(xmlChar *utf1, xmlChar *utf2) {
     return xmlStrncmp(utf1, utf2, len);
 }
 
+static int
+xsltIsLetterDigit(int val) {
+    return xmlIsBaseCharQ(val) || xmlIsIdeographicQ(val) ||
+           xmlIsDigitQ(val);
+}
+
 /***** Stop temp insert *****/
 /************************************************************************
  *									*
@@ -330,8 +336,8 @@ xsltNumberFormatTokenize(const xmlChar *format,
      * Insert initial non-alphanumeric token.
      * There is always such a token in the list, even if NULL
      */
-    while (! (IS_LETTER(val=xmlStringCurrentChar(NULL, format+ix, &len)) ||
-	      IS_DIGIT(val)) ) {
+    while (!xsltIsLetterDigit(val = xmlStringCurrentChar(NULL, format+ix,
+                                                         &len))) {
 	if (format[ix] == 0)		/* if end of format string */
 	    break; /* while */
 	ix += len;
@@ -397,7 +403,7 @@ xsltNumberFormatTokenize(const xmlChar *format,
 	 * to correspond to the Letter and Digit classes from XML (and
 	 * one wonders why XSLT doesn't refer to these instead).
 	 */
-	while (IS_LETTER(val) || IS_DIGIT(val)) {
+	while (xsltIsLetterDigit(val)) {
 	    ix += len;
 	    val = xmlStringCurrentChar(NULL, format+ix, &len);
 	}
@@ -406,7 +412,7 @@ xsltNumberFormatTokenize(const xmlChar *format,
 	 * Insert temporary non-alphanumeric final tooken.
 	 */
 	j = ix;
-	while (! (IS_LETTER(val) || IS_DIGIT(val))) {
+	while (!xsltIsLetterDigit(val)) {
 	    if (val == 0)
 		break; /* while */
 	    ix += len;
diff --git a/dll/3rdparty/libxslt/pattern.c b/dll/3rdparty/libxslt/pattern.c
index 91f5eed4201..0faf1431b43 100644
--- a/dll/3rdparty/libxslt/pattern.c
+++ b/dll/3rdparty/libxslt/pattern.c
@@ -1173,7 +1173,7 @@ xsltCompMatchClearCache(xsltTransformContextPtr ctxt, xsltCompMatchPtr comp) {
 #define CUR_PTR ctxt->cur
 
 #define SKIP_BLANKS							\
-    while (IS_BLANK_CH(CUR)) NEXT
+    while (xmlIsBlank_ch(CUR)) NEXT
 
 #define CURRENT (*ctxt->cur)
 #define NEXT ((*ctxt->cur) ?  ctxt->cur++: ctxt->cur)
@@ -1216,11 +1216,11 @@ xsltScanLiteral(xsltParserContextPtr ctxt) {
         NEXT;
 	cur = q = CUR_PTR;
 	val = xmlStringCurrentChar(NULL, cur, &len);
-	while ((IS_CHAR(val)) && (val != '"')) {
+	while ((xmlIsCharQ(val)) && (val != '"')) {
 	    cur += len;
 	    val = xmlStringCurrentChar(NULL, cur, &len);
 	}
-	if (!IS_CHAR(val)) {
+	if (!xmlIsCharQ(val)) {
 	    ctxt->error = 1;
 	    return(NULL);
 	} else {
@@ -1232,11 +1232,11 @@ xsltScanLiteral(xsltParserContextPtr ctxt) {
         NEXT;
 	cur = q = CUR_PTR;
 	val = xmlStringCurrentChar(NULL, cur, &len);
-	while ((IS_CHAR(val)) && (val != '\'')) {
+	while ((xmlIsCharQ(val)) && (val != '\'')) {
 	    cur += len;
 	    val = xmlStringCurrentChar(NULL, cur, &len);
 	}
-	if (!IS_CHAR(val)) {
+	if (!xmlIsCharQ(val)) {
 	    ctxt->error = 1;
 	    return(NULL);
 	} else {
@@ -1245,7 +1245,6 @@ xsltScanLiteral(xsltParserContextPtr ctxt) {
 	cur += len;
 	CUR_PTR = cur;
     } else {
-	/* XP_ERROR(XPATH_START_LITERAL_ERROR); */
 	ctxt->error = 1;
 	return(NULL);
     }
@@ -1271,14 +1270,15 @@ xsltScanNCName(xsltParserContextPtr ctxt) {
 
     cur = q = CUR_PTR;
     val = xmlStringCurrentChar(NULL, cur, &len);
-    if (!IS_LETTER(val) && (val != '_'))
+    if (!xmlIsBaseCharQ(val) && !xmlIsIdeographicQ(val) && (val != '_'))
 	return(NULL);
 
-    while ((IS_LETTER(val)) || (IS_DIGIT(val)) ||
+    while (xmlIsBaseCharQ(val) || xmlIsIdeographicQ(val) ||
+           xmlIsDigitQ(val) ||
            (val == '.') || (val == '-') ||
 	   (val == '_') ||
-	   (IS_COMBINING(val)) ||
-	   (IS_EXTENDER(val))) {
+	   xmlIsCombiningQ(val) ||
+	   xmlIsExtenderQ(val)) {
 	cur += len;
 	val = xmlStringCurrentChar(NULL, cur, &len);
     }
@@ -1834,7 +1834,7 @@ xsltCompilePatternInternal(const xmlChar *pattern, xmlDocPtr doc,
     current = end = 0;
     while (pattern[current] != 0) {
 	start = current;
-	while (IS_BLANK_CH(pattern[current]))
+	while (xmlIsBlank_ch(pattern[current]))
 	    current++;
 	end = current;
 	level = 0;
diff --git a/dll/3rdparty/libxslt/transform.c b/dll/3rdparty/libxslt/transform.c
index 86184091bcc..56391b43fa4 100644
--- a/dll/3rdparty/libxslt/transform.c
+++ b/dll/3rdparty/libxslt/transform.c
@@ -3602,12 +3602,12 @@ xsltDocumentElem(xsltTransformContextPtr ctxt, xmlNodePtr node,
 
 	element = elements;
 	while (*element != 0) {
-	    while (IS_BLANK_CH(*element))
+	    while (xmlIsBlank_ch(*element))
 		element++;
 	    if (*element == 0)
 		break;
 	    end = element;
-	    while ((*end != 0) && (!IS_BLANK_CH(*end)))
+	    while ((*end != 0) && (!xmlIsBlank_ch(*end)))
 		end++;
 	    element = xmlStrndup(element, end - element);
 	    if (element) {
diff --git a/media/doc/3rd Party Files.txt b/media/doc/3rd Party Files.txt
index 19ff836c6f7..c9d57484dcf 100644
--- a/media/doc/3rd Party Files.txt	
+++ b/media/doc/3rd Party Files.txt	
@@ -45,7 +45,7 @@ URL: http://www.simplesystems.org/libtiff/
 
 Title: Libxslt
 Path: dll/3rdparty/libxslt
-Used Version: 1.1.36
+Used Version: 1.1.37
 License: MIT (https://spdx.org/licenses/MIT.html)
 URL: http://xmlsoft.org
 
diff --git a/sdk/include/reactos/libs/libxslt/xsltconfig.h b/sdk/include/reactos/libs/libxslt/xsltconfig.h
index 8b129d75e50..d999422437c 100644
--- a/sdk/include/reactos/libs/libxslt/xsltconfig.h
+++ b/sdk/include/reactos/libs/libxslt/xsltconfig.h
@@ -20,21 +20,21 @@ extern "C" {
  *
  * the version string like "1.2.3"
  */
-#define LIBXSLT_DOTTED_VERSION "1.1.36"
+#define LIBXSLT_DOTTED_VERSION "1.1.37"
 
 /**
  * LIBXSLT_VERSION:
  *
  * the version number: 1.2.3 value is 10203
  */
-#define LIBXSLT_VERSION 10136
+#define LIBXSLT_VERSION 10137
 
 /**
  * LIBXSLT_VERSION_STRING:
  *
  * the version number string, 1.2.3 value is "10203"
  */
-#define LIBXSLT_VERSION_STRING "10136"
+#define LIBXSLT_VERSION_STRING "10137"
 
 /**
  * LIBXSLT_VERSION_EXTRA: