diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f94b5e8fd3ef7aa399c250e32dcbc0e7ef44ad9..edf3cd1dd859ae648d12acadf8e06f8657946737 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@
 # along with this program. If not, see <https://www.gnu.org/licenses/>.
 #
 
-cmake_minimum_required(VERSION 3.14)
+cmake_minimum_required(VERSION 3.13)
 
 set(libcaosdb_VERSION 0.0.6)
 set(libcaosdb_COMPATIBLE_SERVER_VERSION_MAJOR 0)
diff --git a/DEPENDENCIES.md b/DEPENDENCIES.md
index 7ee267a5dc578199e4b1e6846ab0878ffe463067..63a0678aa601762279c7c46bd71d7582051c4287 100644
--- a/DEPENDENCIES.md
+++ b/DEPENDENCIES.md
@@ -1,7 +1,7 @@
 # GENERAL
 
 * >=conan-1.37.2
-* >=cmake-3.14
+* >=cmake-3.13
 * >=gcc-10.2.0 | >=clang-11
 
 # OPTIONAL
diff --git a/proto b/proto
index 4845aa8e479b85b50a130530bbc96a0cab4f8688..bff5455a899a69d5988366b2f4d175029a7e2362 160000
--- a/proto
+++ b/proto
@@ -1 +1 @@
-Subproject commit 4845aa8e479b85b50a130530bbc96a0cab4f8688
+Subproject commit bff5455a899a69d5988366b2f4d175029a7e2362