diff -Nru libept-1.1+nmu3build1/debian/changelog libept-1.1+nmu3ubuntu1/debian/changelog
--- libept-1.1+nmu3build1/debian/changelog	2016-11-01 20:41:08.000000000 +0000
+++ libept-1.1+nmu3ubuntu1/debian/changelog	2019-06-17 15:55:32.000000000 +0000
@@ -1,3 +1,15 @@
+libept (1.1+nmu3ubuntu1) eoan; urgency=medium
+
+  * Port to apt 1.9.0
+
+ -- Julian Andres Klode <juliank@ubuntu.com>  Mon, 17 Jun 2019 17:55:32 +0200
+
+libept (1.1+nmu3build2) eoan; urgency=high
+
+  * No change rebuild against apt 1.9.0.
+
+ -- Julian Andres Klode <juliank@ubuntu.com>  Mon, 17 Jun 2019 13:09:35 +0200
+
 libept (1.1+nmu3build1) zesty; urgency=medium
 
   * Rebuild against new libxapian30.
diff -Nru libept-1.1+nmu3build1/debian/control libept-1.1+nmu3ubuntu1/debian/control
--- libept-1.1+nmu3build1/debian/control	2015-11-28 20:04:48.000000000 +0000
+++ libept-1.1+nmu3ubuntu1/debian/control	2019-06-17 15:54:39.000000000 +0000
@@ -1,12 +1,13 @@
 Source: libept
 Section: libdevel
 Priority: optional
-Maintainer: Enrico Zini <enrico@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Enrico Zini <enrico@debian.org>
 Uploaders: Petr Rockai <mornfall@debian.org>
 Build-Depends:
   debhelper (>= 9), dh-exec, dh-buildinfo,
   cmake (>= 2.6), pkg-config, doxygen,
-  libapt-pkg-dev (>= 1.1~),
+  libapt-pkg-dev (>= 1.9~),
   libxapian-dev (>= 1.2.21-1.2)
 Standards-Version: 3.9.6.0
 Vcs-Git: git://git.debian.org/git/debtags/libept.git
@@ -17,7 +18,7 @@
 Architecture: any
 Recommends: pkg-config
 Depends:
-  libept1.5.0 (= ${binary:Version}),
+  libept1.5.90 (= ${binary:Version}),
   libapt-pkg-dev (>= 1.0.10), libxapian-dev (>= 1.2.21-1.2), ${misc:Depends}
 Description: High-level library for managing Debian package information
  The library defines a very minimal framework in which many sources of data
@@ -32,7 +33,7 @@
  .
  This is the development library.
 
-Package: libept1.5.0
+Package: libept1.5.90
 Section: libs
 Architecture: any
 Multi-Arch: same
diff -Nru libept-1.1+nmu3build1/debian/libept1.5.0.install libept-1.1+nmu3ubuntu1/debian/libept1.5.0.install
--- libept-1.1+nmu3build1/debian/libept1.5.0.install	2015-11-28 20:04:48.000000000 +0000
+++ libept-1.1+nmu3ubuntu1/debian/libept1.5.0.install	1970-01-01 00:00:00.000000000 +0000
@@ -1,3 +0,0 @@
-# Do not remove the APT library version or the next APT ABI break
-# will produce a libept package with old name, but new library inside.
-debian/tmp/usr/lib/*/libept.so.1.aptpkg5.0
diff -Nru libept-1.1+nmu3build1/debian/libept1.5.90.install libept-1.1+nmu3ubuntu1/debian/libept1.5.90.install
--- libept-1.1+nmu3build1/debian/libept1.5.90.install	1970-01-01 00:00:00.000000000 +0000
+++ libept-1.1+nmu3ubuntu1/debian/libept1.5.90.install	2019-06-17 15:53:41.000000000 +0000
@@ -0,0 +1,3 @@
+# Do not remove the APT library version or the next APT ABI break
+# will produce a libept package with old name, but new library inside.
+debian/tmp/usr/lib/*/libept.so.1.aptpkg5.90
diff -Nru libept-1.1+nmu3build1/ept/apt/apt.cc libept-1.1+nmu3ubuntu1/ept/apt/apt.cc
--- libept-1.1+nmu3build1/ept/apt/apt.cc	2015-11-28 20:04:48.000000000 +0000
+++ libept-1.1+nmu3ubuntu1/ept/apt/apt.cc	2019-06-17 15:53:22.000000000 +0000
@@ -23,10 +23,12 @@
 #include "apt.h"
 #include "ept/utils/sys.h"
 #include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/init.h>
 #include <apt-pkg/progress.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/pkgcachegen.h>
+#include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/policy.h>
 #include <apt-pkg/cachefile.h>
 #include <vector>
@@ -112,7 +114,7 @@
 		if (!m_list->ReadMainList())
 			throw Exception("reading list of sources");
 
-		bool res = pkgMakeStatusCache(*m_list, progress, &m, true);
+		bool res = pkgCacheGenerator::MakeStatusCache(*m_list, &progress, &m, true);
 		progress.Done();
 		if (!res)
 			throw Exception("Reading the package lists or status file");
@@ -147,7 +149,7 @@
 		if (!m_depcache)
 		{
 			m_depcache = new pkgCacheFile;
-			if (!m_depcache->Open(progress, false))
+			if (!m_depcache->Open(&progress, false))
 				throw Exception("Opening the cache file");
 		}
 		return *m_depcache;
@@ -261,8 +263,6 @@
 		{
 			//cerr << "Needs open/reopen" << endl;
 			lastFile = pkgCache::PkgFileIterator(apt.cache(), vflist[idx]->File + apt.cache().PkgFileP);
-			if (!lastFile.IsOk())
-				throw Exception(string("Reading the data record for a package from file ") + lastFile.FileName());
 			//cerr << "Ok for " << lastFile.FileName() << endl;
 			if (file.IsOpen())
 				file.Close();
@@ -606,9 +606,6 @@
 
 			// Check and load the package list file
 			pkgCache::PkgFileIterator pfi = vfi.File();
-			if (!pfi.IsOk())
-				throw Exception(string("Reading the data record for a package version from file ") + pfi.FileName());
-
 			FileFd pkgf(pfi.FileName(), FileFd::ReadOnly);
 			if (_error->PendingError() == true)
 				return std::string();
diff -Nru libept-1.1+nmu3build1/ept/apt/apt-test.cc libept-1.1+nmu3ubuntu1/ept/apt/apt-test.cc
--- libept-1.1+nmu3build1/ept/apt/apt-test.cc	2015-11-28 20:04:48.000000000 +0000
+++ libept-1.1+nmu3ubuntu1/ept/apt/apt-test.cc	2019-06-17 15:55:14.000000000 +0000
@@ -1,5 +1,7 @@
 #include "ept/test.h"
 #include "apt.h"
+
+#include <apt-pkg/pkgsystem.h>
 #include <set>
 #include <algorithm>
 
diff -Nru libept-1.1+nmu3build1/ept/progresscallback.h libept-1.1+nmu3ubuntu1/ept/progresscallback.h
--- libept-1.1+nmu3build1/ept/progresscallback.h	2015-11-28 20:04:48.000000000 +0000
+++ libept-1.1+nmu3ubuntu1/ept/progresscallback.h	2019-06-17 15:54:04.000000000 +0000
@@ -6,6 +6,7 @@
 #ifndef EPT_PROGRESSCALLBACK_H
 #define EPT_PROGRESSCALLBACK_H
 
+#include <string>
 #include <apt-pkg/acquire.h>
 
 namespace ept {
@@ -17,7 +18,7 @@
 public:
     ProgressCallback() {};
     virtual ~ProgressCallback() {};
-    virtual bool MediaChange( string, string ) { return false; } // bah
+    virtual bool MediaChange(std::string, std::string ) { return false; } // bah
 
     // override this to get periodic updates
     virtual void UpdatePulse( double, double, unsigned long ) {}