diff --git a/machines/bosona/configuration.nix b/machines/bosona/configuration.nix
index cb75d38d..2260ef3e 100644
--- a/machines/bosona/configuration.nix
+++ b/machines/bosona/configuration.nix
@@ -17,6 +17,7 @@ in
     inputs.self.overlays.frappixLibsOverlay
     inputs.self.overlays.frappixPythonOverlay
     inputs.self.overlays.frappixToolsOverlay
+    inputs.self.overlays.posthogPr578265Overlay # TEMPORARY, see overlays/nixpkgs-pr-578265-posthog.nix
   ];
 
   clan.core.vars.generators.frappix = {
diff --git a/machines/canopus/configuration.nix b/machines/canopus/configuration.nix
index 21ddf28f..1ad2cda6 100644
--- a/machines/canopus/configuration.nix
+++ b/machines/canopus/configuration.nix
@@ -17,6 +17,7 @@ in
     inputs.self.overlays.frappixLibsOverlay
     inputs.self.overlays.frappixPythonOverlay
     inputs.self.overlays.frappixToolsOverlay
+    inputs.self.overlays.posthogPr578265Overlay # TEMPORARY, see overlays/nixpkgs-pr-578265-posthog.nix
   ];
 
   clan.core.vars.generators.frappix = {
diff --git a/machines/deneb/configuration.nix b/machines/deneb/configuration.nix
index 5b3c9514..0171ef4d 100644
--- a/machines/deneb/configuration.nix
+++ b/machines/deneb/configuration.nix
@@ -26,6 +26,7 @@ in
     inputs.self.overlays.frappixPythonOverlay
     inputs.self.overlays.frappixToolsOverlay
     inputs.self.overlays.frappixAppsOverlay
+    inputs.self.overlays.posthogPr578265Overlay # TEMPORARY, see overlays/nixpkgs-pr-578265-posthog.nix
   ];
 
   fonts.packages = [ pkgs.tlwg ];