diff --git a/matrix-synapse.spec b/matrix-synapse.spec
index 17156c0..a50a7e4 100644
--- a/matrix-synapse.spec
+++ b/matrix-synapse.spec
@@ -6,8 +6,8 @@
 %{?python_enable_dependency_generator}
 
 Name:       matrix-%{srcname}
-Version:    1.26.0
-Release:    3%{?dist}
+Version:    1.38.0
+Release:    1%{?dist}
 Summary:    A Matrix reference homeserver written in Python using Twisted
 License:    ASL 2.0
 URL:        https://github.com/matrix-org/%{srcname}
@@ -26,14 +26,17 @@ BuildRequires:  /usr/bin/openssl
 
 # Package dependencies
 #BuildRequires:  python3-txacme >= 0.9.2
-BuildRequires:  python3-attrs >= 19.1.0
+BuildRequires:  (python3-attrs >= 19.2.0 without python3-attrs = 21.1.0)
 BuildRequires:  python3-authlib
 BuildRequires:  python3-bcrypt >= 3.1.0
 BuildRequires:  python3-bleach >= 1.4.3
 BuildRequires:  python3-canonicaljson >= 1.4.0
+# v3.4.7 affects only the binary distribution, so using v3.4.6 is fine.
+BuildRequires:  python3-cryptography >= 3.4.6
 BuildRequires:  python3-daemonize >= 2.3.1
 BuildRequires:  python3-frozendict >= 1.0
 BuildRequires:  python3-idna >= 2.5
+BuildRequires:  python3-ijson
 BuildRequires:  python3-jinja2 >= 2.9
 BuildRequires:  python3-jsonschema >= 2.5.1
 BuildRequires:  python3-jwt
@@ -135,6 +138,9 @@ exit 0
 
 
 %changelog
+* Wed Jul 14 2021 Kai A. Hiller <V02460@gmail.com> - 1.38.0-1
+- Update to v1.38.0
+
 * Fri Jun 04 2021 Python Maint <python-maint@redhat.com> - 1.26.0-3
 - Rebuilt for Python 3.10
 
diff --git a/sources b/sources
index d2e5190..ae6f93e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (synapse-1.26.0.tar.gz) = 82ca85aa4dc1e3220f89e7f6815786135fa9bd0b33a1055f63b309b1fa193eeb993f832db573586945191e7195e42926c5342776b249dbc8e83daf4c196f00a4
+SHA512 (synapse-1.38.0.tar.gz) = d6da8a2ef7bd281b3117ec51743e984f21c9a7aaeaab4f81880e612d201874c0fd366fc18793ae351c168e1f985530fdbb4a6edfcaf9c8d93001bd92cd043f6c