diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 92bfbdef2afd..1b8b222b94d6 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6002,7 +6002,9 @@ with pkgs;
   inherit (beam.packages.erlang)
     rebar rebar3-open rebar3
     hexRegistrySnapshot fetchHex beamPackages
-    hex2nix cuter relxExe;
+    hex2nix cuter;
+
+  inherit (beam.packages.erlangR18) relxExe;
 
   groovy = callPackage ../development/interpreters/groovy { };
 
@@ -11472,7 +11474,9 @@ with pkgs;
 
   xwayland = callPackage ../servers/x11/xorg/xwayland.nix { };
 
-  yaws = callPackage ../servers/http/yaws { };
+  yaws = callPackage ../servers/http/yaws {
+    erlang = erlangR18;
+  };
 
   zabbix = recurseIntoAttrs (callPackages ../servers/monitoring/zabbix {});
 
@@ -16436,7 +16440,9 @@ with pkgs;
 
   winswitch = callPackage ../tools/X11/winswitch { };
 
-  wings = callPackage ../applications/graphics/wings { };
+  wings = callPackage ../applications/graphics/wings {
+    erlang = erlangR18;
+  };
 
   wireguard = callPackage ../os-specific/linux/wireguard { };
 
diff --git a/pkgs/top-level/beam-packages.nix b/pkgs/top-level/beam-packages.nix
index 46b0d12a5e91..acdbea673328 100644
--- a/pkgs/top-level/beam-packages.nix
+++ b/pkgs/top-level/beam-packages.nix
@@ -7,10 +7,10 @@ rec {
   interpreters = rec {
 
     # R18 is the default version.
-    erlang = erlangR18; # The main switch to change default Erlang version.
-    erlang_odbc = erlangR18_odbc;
-    erlang_javac = erlangR18_javac;
-    erlang_odbc_javac = erlangR18_odbc_javac;
+    erlang = erlangR19; # The main switch to change default Erlang version.
+    erlang_odbc = erlangR19_odbc;
+    erlang_javac = erlangR19_javac;
+    erlang_odbc_javac = erlangR19_odbc_javac;
 
     # These are standard Erlang versions, using the generic builder.
     erlangR16 = lib.callErlang ../development/interpreters/erlang/R16.nix {};