diff --git a/.gitattributes b/.gitattributes
index 9b03811..e6096f7 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -21,3 +21,6 @@
 *.xz filter=lfs diff=lfs merge=lfs -text
 *.zip filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
+## Specific LFS patterns
+crypto.inv filter=lfs diff=lfs merge=lfs -text
+python3.inv filter=lfs diff=lfs merge=lfs -text
diff --git a/crypto.inv b/crypto.inv
new file mode 100644
index 0000000..264442d
--- /dev/null
+++ b/crypto.inv
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:41ce8ae745441735db7d7745cc412146c483377c44cda20d7844e0e1141e19a2
+size 9076
diff --git a/fetch-intersphinx-inventories.sh b/fetch-intersphinx-inventories.sh
new file mode 100644
index 0000000..6d9209a
--- /dev/null
+++ b/fetch-intersphinx-inventories.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+wget -O pyopenssl.inv https://pyopenssl.readthedocs.io/en/stable/objects.inv
+wget -O python3.inv https://docs.python.org/3/objects.inv
+wget -O crypto.inv https://cryptography.io/en/latest/objects.inv
+
diff --git a/local-intersphinx-inventories.patch b/local-intersphinx-inventories.patch
new file mode 100644
index 0000000..73449b5
--- /dev/null
+++ b/local-intersphinx-inventories.patch
@@ -0,0 +1,15 @@
+Index: b/docs/conf.py
+===================================================================
+--- a/docs/conf.py
++++ b/docs/conf.py
+@@ -301,7 +301,7 @@ texinfo_documents = [
+ 
+ # Example configuration for intersphinx: refer to the Python standard library.
+ intersphinx_mapping = {
+-    "https://docs.python.org/3/": None,
+-    "https://pyopenssl.readthedocs.io/en/stable": None,
+-    "https://cryptography.io/en/stable/": None,
++    "https://docs.python.org/3/": "python3.inv",
++    "https://pyopenssl.readthedocs.io/en/stable": "pyopenssl.inv",
++    "https://cryptography.io/en/stable/": "crypto.inv",
+ }
diff --git a/pyopenssl.inv b/pyopenssl.inv
new file mode 100644
index 0000000..62c85df
Binary files /dev/null and b/pyopenssl.inv differ
diff --git a/python-service_identity.changes b/python-service_identity.changes
index afe73c9..3a34caa 100644
--- a/python-service_identity.changes
+++ b/python-service_identity.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Mon Feb  4 19:49:08 UTC 2019 - Hans-Peter Jansen <hpj@urpla.net>
+
+- add local-intersphinx-inventories.patch for generating the docs
+  correctly
+- add fetch-intersphinx-inventories.sh to fetch the inventories
+
 -------------------------------------------------------------------
 Tue Dec  4 12:54:12 UTC 2018 - Matej Cepl <mcepl@suse.com>
 
diff --git a/python-service_identity.spec b/python-service_identity.spec
index 646495b..9e643ab 100644
--- a/python-service_identity.spec
+++ b/python-service_identity.spec
@@ -1,8 +1,8 @@
 #
 # spec file for package python-service_identity
 #
-# Copyright (c) 2018 SUSE LINUX GmbH, Nuernberg, Germany.
-# Copyright (c) 2014 LISA GmbH, Bingen, Germany.
+# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2014-2019 LISA GmbH, Bingen, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -27,6 +27,10 @@ License:        MIT
 Group:          Development/Languages/Python
 URL:            https://github.com/pyca/service_identity
 Source0:        https://pypi.io/packages/source/s/%{oname}/%{oname}-%{version}.tar.gz
+Source1:        python3.inv
+Source2:        pyopenssl.inv
+Source3:        crypto.inv
+Patch1:         local-intersphinx-inventories.patch
 # Documentation
 BuildRequires:  %{python_module Sphinx}
 BuildRequires:  %{python_module attrs}
@@ -54,11 +58,18 @@ relevant RFCs too.
 
 %prep
 %setup -q -n %{oname}-%{version}
+%autopatch -p1
+
+# prepare local intersphinx inventories, fetch with fetch-intersphinx-inventories.sh
+cp -v %{S:1} docs/
+cp -v %{S:2} docs/
+cp -v %{S:3} docs/
 
 %build
 %python_build
 
 # make man and documentation
+export PYTHONPATH=$(pwd)/build/lib
 cd docs
 # do not run these in parallel to ensure reproducible builds (boo#1102408)
 make %{?_smp_mflags} man
diff --git a/python3.inv b/python3.inv
new file mode 100644
index 0000000..99ffcde
--- /dev/null
+++ b/python3.inv
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0c8b6fe404be5534e725ad69abf2a0f7deb6a2972b6500584df61102ce20d7fd
+size 102981