diff --git a/domoticz.spec b/domoticz.spec
index 0dca8f8..19cbe79 100644
--- a/domoticz.spec
+++ b/domoticz.spec
@@ -1,6 +1,6 @@
 Name:          domoticz
 Version:       2021.1
-Release:       1mamba
+Release:       3mamba
 Summary:       A Home Automation System that lets you monitor and configure various devices
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
@@ -26,6 +26,7 @@ BuildRequires: libsqlite-devel
 BuildRequires: libusb-compat-devel
 BuildRequires: libz-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libfmt-devel >= 8.0.1
 BuildRequires: libminizip-devel >= 2.10.0-2mamba
 BuildRequires: libcereal-devel
 BuildRequires: cmake
@@ -46,6 +47,7 @@ sed -i "s|minizip|minizip2|" CMakeLists.txt
    -DUSE_BUILTIN_MQTT=NO \
    -DUSE_BUILTIN_JSONCPP=NO \
    -DUSE_BUILTIN_MINIZIP=NO \
+   -DUSE_BUILTIN_LIBFMT=NO \
    -DGIT_SUBMODULE=OFF
 
 %make
@@ -107,6 +109,12 @@ install -d -m0755 %{buildroot}/var/lib/domoticz
 %doc License.txt
 
 %changelog
+* Mon Oct 18 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2021.1-3mamba
+- rebuilt with libfmt 8.0.1
+
+* Sun Oct 17 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 2021.1-2mamba
+- rebuilt with libfmt 8.0.1
+
 * Sun May 02 2021 Automatic Build System <autodist@mambasoft.it> 2021.1-1mamba
 - automatic version update by autodist