diff --git a/firebird.spec b/firebird.spec
index f2c824f..2af1413 100644
--- a/firebird.spec
+++ b/firebird.spec
@@ -102,6 +102,8 @@ Provides:  %{name}-arch = %{version}-%{release}
 Requires(post): systemd-units
 Requires(preun): systemd-units
 Requires(postun): systemd-units
+Conflicts:     systemd < 38
+Conflicts:     filesystem < 3
 Requires:  %{name} = %{version}-%{release}
 Conflicts:  %{name}-superclassic
 Requires:  %{name}-libfbembed = %{version}-%{release}
@@ -122,6 +124,8 @@ Requires:  %{name}-classic-common = %{version}-%{release}
 Requires(post): systemd-units
 Requires(preun): systemd-units
 Requires(postun): systemd-units
+Conflicts:     systemd < 38
+Conflicts:     filesystem < 3
 
 %description  superclassic
 The "superclassic" architecture uses a new thread to handle each connection.
@@ -136,6 +140,8 @@ Conflicts:  %{name}-classic-common
 Requires(post): systemd-units
 Requires(preun): systemd-units
 Requires(postun): systemd-units
+Conflicts:     systemd < 38
+Conflicts:     filesystem < 3
 
 %description  superserver
 This is the Superserver (single process) Firebird SQL RDBMS.