diff -u -r ../imagick-3.7.0/imagick.c ./imagick.c
--- ../imagick-3.7.0/imagick.c	2022-01-11 14:53:27.000000000 +0000
+++ ./imagick.c	2025-01-10 16:44:16.802405616 +0000
@@ -603,7 +603,7 @@
 					if (format) {
 						retval = rv;
 						ZVAL_STRING(retval, format);
-						php_strtolower(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
+						zend_str_tolower(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
 						IMAGICK_FREE_MAGICK_MEMORY(format);
 					} else {
 						retval = rv;
@@ -676,7 +676,7 @@
 					if (format) {
 						retval = rv;
 						ZVAL_STRING(retval, format);
-						php_strtolower(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
+						zend_str_tolower(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
 						IMAGICK_FREE_MAGICK_MEMORY(format);
 					} else {
 						retval = rv;
@@ -759,7 +759,7 @@
 
 					if (format) {
 						ZVAL_STRING(retval, format, 1);
-						php_strtolower(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
+						zend_str_tolower(Z_STRVAL_P(retval), Z_STRLEN_P(retval));
 						IMAGICK_FREE_MAGICK_MEMORY(format);
 					} else {
 						ZVAL_STRING(retval, "", 1);
diff -u -r ../imagick-3.7.0/imagick_helpers.c ./imagick_helpers.c
--- ../imagick-3.7.0/imagick_helpers.c	2022-01-11 14:53:27.000000000 +0000
+++ ./imagick_helpers.c	2025-01-10 16:45:24.881208147 +0000
@@ -23,6 +23,25 @@
 #include "php_imagick_macros.h"
 #include "php_imagick_helpers.h"
 
+#define EXTRACT_BUILD_NUMBER(str) ({ \
+    int build = 0; \
+    const char *s = str; \
+    while (*s && !isdigit(*s)) s++; \
+    if (*s) build = atoi(s); \
+    build; \
+})
+
+#define MAGICK_LIB_VERSION_MAJOR ((MagickLibVersion >> 8) & 0xFF)
+#define MAGICK_LIB_VERSION_MINOR ((MagickLibVersion >> 4) & 0xF)
+#define MAGICK_LIB_VERSION_PATCH (MagickLibVersion & 0xF)
+#define MAGICK_LIB_VERSION_BUILD EXTRACT_BUILD_NUMBER(MagickLibAddendum)
+
+#define MAGICK_LIB_VERSION_GTE(major, minor, patch, build) \
+    ((VERSION_MAJOR > (major)) || \
+    (VERSION_MAJOR == (major) && VERSION_MINOR > (minor)) || \
+    (VERSION_MAJOR == (major) && VERSION_MINOR == (minor) && VERSION_PATCH > (patch)) || \
+    (VERSION_MAJOR == (major) && VERSION_MINOR == (minor) && VERSION_PATCH == (patch) && VERSION_BUILD >= (build)))
+
 MagickBooleanType php_imagick_progress_monitor(const char *text, const MagickOffsetType offset, const MagickSizeType span, void *client_data)
 {
 	FILE *fp;
@@ -1197,6 +1216,10 @@
 #if MagickLibVersion >= 0x707
 	IMAGICK_REGISTER_CONST_LONG("FILTER_CUBIC_SPLINE", CubicSplineFilter);
 #endif
+#if MAGICK_LIB_VERSION_GTE(7, 1, 1, 40)
+	IMAGICK_REGISTER_CONST_LONG("FILTER_MAGIC_KERNEL_SHARP_2013", MagicKernelSharp2013Filter);
+	IMAGICK_REGISTER_CONST_LONG("FILTER_MAGIC_KERNEL_SHARP_2021", MagicKernelSharp2021Filter);
+#endif
 	IMAGICK_REGISTER_CONST_LONG("IMGTYPE_UNDEFINED", UndefinedType);
 	IMAGICK_REGISTER_CONST_LONG("IMGTYPE_BILEVEL", BilevelType);
 	IMAGICK_REGISTER_CONST_LONG("IMGTYPE_GRAYSCALE", GrayscaleType);
@@ -1284,12 +1307,17 @@
 	IMAGICK_REGISTER_CONST_LONG("COMPRESSION_DWAB", DWABCompression);
 #endif
 
-#if MagickLibVersion >= 0x711
+#if MAGICK_LIB_VERSION_GTE(7, 1, 0, 13)
 	// Technically >= 7.1.0-13 but we still don't have a mechanism for
 	// detecting patch versions.
 	IMAGICK_REGISTER_CONST_LONG("COMPRESSION_BC7", BC7Compression);
 #endif
 
+// ImageMagick version >= 7.1.1-16
+#if MAGICK_LIB_VERSION_GTE(7, 1, 1, 16)
+	IMAGICK_REGISTER_CONST_LONG("COMPRESSION_LERC", LERCCompression);
+#endif
+
 	IMAGICK_REGISTER_CONST_LONG("PAINT_POINT", PointMethod);
 	IMAGICK_REGISTER_CONST_LONG("PAINT_REPLACE", ReplaceMethod);
 	IMAGICK_REGISTER_CONST_LONG("PAINT_FLOODFILL", FloodfillMethod);
@@ -1552,6 +1580,11 @@
 	IMAGICK_REGISTER_CONST_LONG("COLORSPACE_JZAZBZ", JzazbzColorspace);
 #endif
 
+#if MAGICK_LIB_VERSION_GTE(7, 1, 1, 9)
+	IMAGICK_REGISTER_CONST_LONG("COLORSPACE_OKLAB", OklabColorspace);
+	IMAGICK_REGISTER_CONST_LONG("COLORSPACE_OKLCH", OklchColorspace);
+#endif
+
 	IMAGICK_REGISTER_CONST_LONG("VIRTUALPIXELMETHOD_UNDEFINED", UndefinedVirtualPixelMethod);
 	IMAGICK_REGISTER_CONST_LONG("VIRTUALPIXELMETHOD_BACKGROUND", BackgroundVirtualPixelMethod);
 #if MagickLibVersion < 0x700
@@ -1801,6 +1834,9 @@
 #if MagickLibVersion >= 0x700
 	IMAGICK_REGISTER_CONST_LONG("ALPHACHANNEL_OFF", OffAlphaChannel);
 #endif
+#if MAGICK_LIB_VERSION_GTE(7, 1, 1, 26)
+	IMAGICK_REGISTER_CONST_LONG("ALPHACHANNEL_OFF_IF_OPAQUE", OffIfOpaqueAlphaChannel);
+#endif
 	IMAGICK_REGISTER_CONST_LONG("ALPHACHANNEL_OPAQUE", OpaqueAlphaChannel);
 	IMAGICK_REGISTER_CONST_LONG("ALPHACHANNEL_SHAPE", ShapeAlphaChannel);
 	IMAGICK_REGISTER_CONST_LONG("ALPHACHANNEL_TRANSPARENT", TransparentAlphaChannel);
@@ -1948,6 +1984,10 @@
 IMAGICK_REGISTER_CONST_LONG("DIRECTION_LEFT_TO_RIGHT", LeftToRightDirection);
 IMAGICK_REGISTER_CONST_LONG("DIRECTION_RIGHT_TO_LEFT", RightToLeftDirection);
 
+#if MAGICK_LIB_VERSION_GTE(7, 1, 1, 14)
+    IMAGICK_REGISTER_CONST_LONG("DIRECTION_TOP_TO_BOTTOM", TopToBottomDirection);
+#endif
+
 // The kernel is scaled directly using given scaling factor without change.
 IMAGICK_REGISTER_CONST_LONG("NORMALIZE_KERNEL_NONE", 0);
 // Kernel normalization ('normalize_flags' given) is designed to ensure 
diff -u -r ../imagick-3.7.0/tests/316_Imagick_getImageKurtosis.phpt ./tests/316_Imagick_getImageKurtosis.phpt
--- ../imagick-3.7.0/tests/316_Imagick_getImageKurtosis.phpt	2022-01-11 14:53:27.000000000 +0000
+++ ./tests/316_Imagick_getImageKurtosis.phpt	2025-01-10 16:44:16.803405613 +0000
@@ -14,8 +14,19 @@
     $imagick = new \Imagick(__DIR__ . '/Biter_500.jpg');
     $values = $imagick->getImageKurtosis();
 
-    check_value($values, "kurtosis", -0.9379261035010518);
-    check_value($values, "skewness", 0.4562517200972045);
+    try {
+        check_value($values, "kurtosis", -0.9379261035010518);
+    } catch (\Exception $exception) {
+        // From version 7.1.1-24 the value of kurtosis is -0.7092599567492
+        check_value($values, "kurtosis", -0.7092599567492);
+    }
+
+    try {
+        check_value($values, "skewness", 0.4562517200972045);
+    } catch (\Exception $exception) {
+        // From version 7.1.1-24 the value of skewness is 0.56839010636614
+        check_value($values, "skewness", 0.56839010636614);
+    }
 }
 
 getImageKurtosis() ;
diff -u -r ../imagick-3.7.0/util/calculate_cflags.php ./util/calculate_cflags.php
--- ../imagick-3.7.0/util/calculate_cflags.php	2022-01-11 14:53:27.000000000 +0000
+++ ./util/calculate_cflags.php	2025-01-10 16:44:16.803405613 +0000
@@ -58,6 +58,14 @@
     );
 }
 
-$result = implode(" ", $CFLAGS);
+// Problem with zend_*.h files on newer PHP builds
+if (in_array($PHP_VERSION, ['8.2', '8.3', '8.4'], true)) {
+    $CFLAGS = array_values(array_diff($CFLAGS, ['-Wdeclaration-after-statement']));
+}
+if (in_array($PHP_VERSION, ['8.4'], true)) {
+    $CFLAGS[] = "-Wno-missing-field-initializers";
+}
+
+$result = implode(" ", array_unique($CFLAGS));
 echo $result;
 fwrite(STDERR, "Ok. CFLAGS are: $result\n");
diff -u -r ../imagick-3.7.0/util/check_for_missing_enums.php ./util/check_for_missing_enums.php
--- ../imagick-3.7.0/util/check_for_missing_enums.php	2022-01-11 14:53:27.000000000 +0000
+++ ./util/check_for_missing_enums.php	2025-01-10 16:44:16.803405613 +0000
@@ -158,6 +158,9 @@
 		'MagickCore/cache-view.h' => [
 			'VirtualPixelMethod',
 		],
+		'MagickCore/channel.h' => [
+			'AlphaChannelOption',
+		],
 		'MagickCore/compare.h' => [
 			'MetricType',
 		],