diff --git a/.gitignore b/.gitignore
index 87b96a1..81dd4f6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /libdmtx-0.7.2.tar.bz2
 /libdmtx-0.7.4.tar.bz2
+/libdmtx-0.7.5.tar.gz
diff --git a/libdmtx.spec b/libdmtx.spec
index 70b8045..65299df 100644
--- a/libdmtx.spec
+++ b/libdmtx.spec
@@ -1,12 +1,23 @@
 Name:           libdmtx
-Version:        0.7.4
-Release:        4%{?dist}
+Version:        0.7.5
+Release:        1%{?dist}
 Summary:        Library for working with Data Matrix 2D bar-codes
 
 Group:          System Environment/Libraries
 License:        BSD
-URL:            http://www.libdmtx.org/
-Source0:        http://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.bz2
+# http://www.libdmtx.org/ doesn't work any more
+# outdated info is still at http://libdmtx.sourceforge.net/
+URL:            https://github.com/dmtx
+Source0:        https://github.com/dmtx/%{name}/archive/v%{version}/%{name}-%{version}.tar.gz
+# https://github.com/dmtx/libdmtx/pull/13
+Patch0:         libdmtx-0.7.5-c99.patch
+# https://github.com/dmtx/libdmtx/pull/14
+Patch1:         libdmtx-0.7.5-size_t.patch
+# https://github.com/dmtx/libdmtx/pull/12
+Patch2:         libdmtx-0.7.5-math.patch
+
+BuildRequires:  gcc
+BuildRequires:  libtool
 
 # obsolete language bindings we can't provide any more
 Obsoletes:      php-libdmtx < 0.7.4
@@ -38,7 +49,9 @@ developing applications that use %{name}.
 
 
 %prep
-%autosetup
+%autosetup -p1
+
+./autogen.sh
 
 
 %build
@@ -80,6 +93,9 @@ popd
 
 
 %changelog
+* Fri Apr 06 2018 Dan Horák <dan[at]danny.cz> - 0.7.5-1
+- updated to 0.7.5
+
 * Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 0.7.4-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
 
diff --git a/sources b/sources
index 117124a..4a0252f 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libdmtx-0.7.4.tar.bz2) = 13066ecefb3da3746c6f1e872ae7493bb3902fb891ef6d96f65a90ca444107662fcad4a7fae3463ab2f6503f0962d248a5dcd754a6eb0b5c624ae68100b9c056
+SHA512 (libdmtx-0.7.5.tar.gz) = c4bccc9eff4a93b6bb417ed23ed46e82cc98b650a94be40479d192af8537ee02a16700fbbd8f2271035ff8b804c40ab6461825d94bd80a3081d3a4b3988ea22a