diff --git a/Formula/h/httptap.rb b/Formula/h/httptap.rb
index bde670e84698c..9517c87839c32 100644
--- a/Formula/h/httptap.rb
+++ b/Formula/h/httptap.rb
@@ -90,7 +90,8 @@ class Httptap < Formula
   end
 
   def install
-    # The source doesn't have a valid SOURCE_DATE_EPOCH, so here we set default.
+    # hatch does not support a SOURCE_DATE_EPOCH before 1980.
+    # Remove after https://github.com/pypa/hatch/pull/1999 is released.
     ENV["SOURCE_DATE_EPOCH"] = "1451574000"
 
     virtualenv_install_with_resources
diff --git a/Formula/k/kimi-cli.rb b/Formula/k/kimi-cli.rb
index 61b3ced9eae67..4f72ddcaf784a 100644
--- a/Formula/k/kimi-cli.rb
+++ b/Formula/k/kimi-cli.rb
@@ -548,7 +548,8 @@ class KimiCli < Formula
   end
 
   def install
-    # The source doesn't have a valid SOURCE_DATE_EPOCH, so here we set default.
+    # hatch does not support a SOURCE_DATE_EPOCH before 1980.
+    # Remove after https://github.com/pypa/hatch/pull/1999 is released.
     ENV["SOURCE_DATE_EPOCH"] = "1451574000"
 
     virtualenv_install_with_resources