diff --git a/glpk-4.48.tar.bz2 b/glpk-4.48.tar.bz2
deleted file mode 100644
index bb7a65a..0000000
--- a/glpk-4.48.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0ccc7b5061e1665430cd305fbaa6383964b2aeadd4f8cffbe0103ff640e7ed6d
-size 3251856
diff --git a/glpk-4.52.tar.bz2 b/glpk-4.52.tar.bz2
new file mode 100644
index 0000000..99b97c4
--- /dev/null
+++ b/glpk-4.52.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7a82025fef6af4a08c6cdf5d5b3ec97a33409c9365d56e2eaef18738aa8a04df
+size 2558197
diff --git a/glpk.changes b/glpk.changes
index df61a35..8c3519b 100644
--- a/glpk.changes
+++ b/glpk.changes
@@ -1,3 +1,28 @@
+-------------------------------------------------------------------
+Thu Jul 25 19:46:35 UTC 2013 - matwey.kornilov@gmail.com
+
+- use -fno-strict-aliasing to avoid warnings in minisat.c
+- don't use dvipdf, docs are in pdf in 4.52
+
+-------------------------------------------------------------------
+Thu Jul 25 18:57:43 UTC 2013 - matwey.kornilov@gmail.com
+
+- updated to 4.52 (see NEWA for details):
+  * Some bugs were fixed. Thanks to
+    Giorgio Sartor <0gioker0@gmail.com>,
+    Xypron <xypron.glpk@gmx.de>,
+    David T. Price <dtprice@speakeasy.net>
+  * The clique cut generator was essentially reimplemented, and now
+    it is able to process very large and/or dense conflict graphs.
+  * Singleton and dense phases were implemented on computing
+    LU-factorization with Gaussian elimination.
+  * A new version of LU-factorization routines were added.
+  * The new API routine glp_mincost_relax4, which is a driver to
+    relaxation method of Bertsekas and Tseng (RELAX-IV), was added
+    to the package.
+  * All old API routines whose names begin with 'lpx_'
+    were removed from API level and NO MORE AVAILABLE.
+
 -------------------------------------------------------------------
 Wed Mar 27 07:28:51 UTC 2013 - pgajdos@suse.com
 
diff --git a/glpk.spec b/glpk.spec
index 222537c..0d023e1 100644
--- a/glpk.spec
+++ b/glpk.spec
@@ -17,9 +17,9 @@
 
 
 Name:           glpk
-Version:        4.48
+Version:        4.52
 Release:        0
-%define libmaj  33
+%define libmaj  35
 Summary:        GNU Linear Programming Kit
 License:        GPL-3.0
 Group:          Development/Libraries/C and C++
@@ -82,7 +82,7 @@ callable library.
 %setup -q
 
 %build
-%configure --enable-static=no
+CFLAGS="$RPM_OPT_FLAGS -fno-strict-aliasing" %configure --enable-static=no
 make %{?_smp_mflags}
 
 %install
@@ -91,8 +91,6 @@ rm $RPM_BUILD_ROOT%{_libdir}/*.la
 mkdir -p $RPM_BUILD_ROOT%{_docdir}/%{name}/examples
 cp examples/*.{mod,c,dat,mps,lp} $RPM_BUILD_ROOT%{_docdir}/%{name}/examples
 mkdir $RPM_BUILD_ROOT%{_docdir}/%{name}/doc
-dvipdf doc/glpk.dvi doc/glpk.pdf
-dvipdf doc/gmpl.dvi doc/gmpl.pdf
 cp doc/{*.txt,*.pdf} $RPM_BUILD_ROOT%{_docdir}/%{name}/doc
 cp {AUTHORS,ChangeLog,COPYING,NEWS,README} $RPM_BUILD_ROOT%{_docdir}/%{name}