diff --git a/overlays/khal/default.nix b/overlays/khal/default.nix
new file mode 100644
index 0000000..7a1c646
--- /dev/null
+++ b/overlays/khal/default.nix
@@ -0,0 +1,6 @@
+self: super: {
+  khal = super.khal.overridePythonAttrs(old: {
+    # As long as https://github.com/NixOS/nixpkgs/issues/205014 is open
+    doCheck = false;
+  });
+}
diff --git a/overlays/mycli/default.nix b/overlays/mycli/default.nix
new file mode 100644
index 0000000..4b9d437
--- /dev/null
+++ b/overlays/mycli/default.nix
@@ -0,0 +1,6 @@
+self: super: {
+  mycli = super.mycli.overridePythonAttrs(old: {
+    # As long as https://github.com/NixOS/nixpkgs/issues/211415is is open
+    doCheck = false;
+  });
+}