diff --git a/.gitignore b/.gitignore
index 30313c9..30ad8e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ libmatroska-1.0.0.tar.bz2
 /libmatroska-1.4.8.tar.xz
 /libmatroska-1.4.9.tar.xz
 /libmatroska-1.5.0.tar.xz
+/libmatroska-1.5.2.tar.xz
diff --git a/libmatroska-memory.patch b/libmatroska-memory.patch
deleted file mode 100644
index e058353..0000000
--- a/libmatroska-memory.patch
+++ /dev/null
@@ -1,53 +0,0 @@
-diff -ruwbBd libmatroska-1.5.0/src/KaxBlock.cpp libmatroska-1.5.1/src/KaxBlock.cpp
---- libmatroska-1.5.0/src/KaxBlock.cpp	2019-03-12 20:54:34.000000000 +0100
-+++ libmatroska-1.5.1/src/KaxBlock.cpp	2019-05-25 12:16:54.000000000 +0200
-@@ -628,11 +628,12 @@
-       // put all Frames in the list
-       if (mLacing != LACING_NONE) {
-         // read the number of frames in the lace
--        uint32 LastBufferSize = GetSize() - BlockHeadSize - 1; // 1 for number of frame
-+        const uint32 TotalLacedSize = GetSize() - BlockHeadSize - 1; // 1 for number of frame
-+        uint32 LastBufferSize = TotalLacedSize;
-         uint8 FrameNum = _TempHead[0]; // number of frames in the lace - 1
-         // read the list of frame sizes
-         uint8 Index;
--        int32 FrameSize;
-+        uint32 FrameSize;
-         uint32 SizeRead;
-         uint64 SizeUnknown;
- 
-@@ -646,6 +647,8 @@
-               do {
-                 Result += input.read(_TempHead, 1);
-                 FrameSize += uint8(_TempHead[0]);
-+                if (FrameSize > TotalLacedSize)
-+                  throw SafeReadIOCallback::EndOfStreamX(0);
-                 LastBufferSize--;
- 
-                 FirstFrameLocation++;
-@@ -662,6 +665,8 @@
-             cursor = _tmpBuf = new binary[FrameNum*4]; /// \warning assume the mean size will be coded in less than 4 bytes
-             Result += input.read(cursor, FrameNum*4);
-             FrameSize = ReadCodedSizeValue(cursor, SizeRead, SizeUnknown);
-+            if (FrameSize > TotalLacedSize)
-+              throw SafeReadIOCallback::EndOfStreamX(0);
-             SizeList[0] = FrameSize;
-             cursor += SizeRead;
-             LastBufferSize -= FrameSize + SizeRead;
-@@ -670,6 +675,8 @@
-               // get the size of the frame
-               SizeRead = LastBufferSize;
-               FrameSize += ReadCodedSizeSignedValue(cursor, SizeRead, SizeUnknown);
-+              if (FrameSize > TotalLacedSize)
-+                throw SafeReadIOCallback::EndOfStreamX(0);
-               SizeList[Index] = FrameSize;
-               cursor += SizeRead;
-               LastBufferSize -= FrameSize + SizeRead;
-@@ -703,7 +710,6 @@
-   } catch (SafeReadIOCallback::EndOfStreamX &) {
-     SetValueIsSet(false);
- 
--    std::memset(EbmlBinary::GetBuffer(), 0, GetSize());
-     myBuffers.clear();
-     SizeList.clear();
-     Timecode           = 0;
diff --git a/libmatroska.spec b/libmatroska.spec
index 02d542e..160d3fb 100644
--- a/libmatroska.spec
+++ b/libmatroska.spec
@@ -1,15 +1,14 @@
 Summary:	Open audio/video container format library
 Name:		libmatroska
-Version:	1.5.0
-Release:	2%{?dist}
+Version:	1.5.2
+Release:	1%{?dist}
 License:	LGPLv2+
 URL:		https://www.matroska.org/
 Source0:	https://dl.matroska.org/downloads/%{name}/%{name}-%{version}.tar.xz
-Patch0:		%{name}-memory.patch
 BuildRequires:	cmake3
 BuildRequires:	gcc-c++
-BuildRequires:	libebml-devel >= 1.3.7
-Requires:	libebml%{_isa} >= 1.3.7
+BuildRequires:	libebml-devel >= 1.3.8
+Requires:	libebml%{_isa} >= 1.3.8
 
 %description
 Matroska is an extensible open standard Audio/Video container.  It
@@ -22,7 +21,7 @@ is usually found as .mkv files (matroska video) and .mka files
 Summary:	Matroska container format library development files
 Requires:	%{name}%{_isa} = %{version}-%{release}
 Requires:	%{_libdir}/cmake
-Requires:	libebml-devel >= 1.3.7
+Requires:	libebml-devel >= 1.3.8
 Requires:	pkgconfig
 
 %description	devel
@@ -37,7 +36,6 @@ will use the Matroska container format.
 
 %prep
 %setup -q
-%patch0 -p1 -b .m
 
 
 %build
@@ -61,14 +59,18 @@ will use the Matroska container format.
 %{_includedir}/matroska/
 %{_libdir}/%{name}.so
 %{_libdir}/pkgconfig/%{name}.pc
-%dir %{_libdir}/cmake/matroska
-%{_libdir}/cmake/matroska/MatroskaConfig.cmake
-%{_libdir}/cmake/matroska/MatroskaConfigVersion.cmake
-%{_libdir}/cmake/matroska/MatroskaTargets-noconfig.cmake
-%{_libdir}/cmake/matroska/MatroskaTargets.cmake
+%dir %{_libdir}/cmake/Matroska
+%{_libdir}/cmake/Matroska/MatroskaConfig.cmake
+%{_libdir}/cmake/Matroska/MatroskaConfigVersion.cmake
+%{_libdir}/cmake/Matroska/MatroskaTargets-noconfig.cmake
+%{_libdir}/cmake/Matroska/MatroskaTargets.cmake
 
 
 %changelog
+* Tue Sep 10 2019 Dominik Mierzejewski <rpm@greysector.net> - 1.5.2-1
+- update to 1.5.2 (#1688000)
+- drop obsolete patch
+
 * Thu Jul 25 2019 Fedora Release Engineering <releng@fedoraproject.org> - 1.5.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
 
diff --git a/sources b/sources
index 4a9e637..b5f4619 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libmatroska-1.5.0.tar.xz) = eb59b5afd9d510c2d6c7408b0053a261cee6669a9f5bbb1a939d98d96ac6c9b8f340691e95310268f59c954a1d9f72322fd0ec7b442a74c56cd2e2c22eb3a754
+SHA512 (libmatroska-1.5.2.tar.xz) = 122b71b91ae89e2a7cc89db17655a006248d58f18d913b4f9ffc885aef7e39681a3a16eed43cd8ecd949c570a939007797c79829f5ee87d08562aee3f0224ba2