diff --git a/PCbuild/regen.targets b/PCbuild/regen.targets
index 416241d9d0df10..8ea0ea1f8e3717 100644
--- a/PCbuild/regen.targets
+++ b/PCbuild/regen.targets
@@ -104,6 +104,8 @@
           WorkingDirectory="$(PySourcePath)" />
     <Exec Command="$(PythonForBuild) Tools\cases_generator\optimizer_generator.py Python\optimizer_bytecodes.c Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
+    <Exec Command="$(PythonForBuild) Tools\cases_generator\partial_evaluator_generator.py Python\partial_evaluator_bytecodes.c Python\bytecodes.c"
+          WorkingDirectory="$(PySourcePath)" />
     <Exec Command="$(PythonForBuild) Tools\cases_generator\opcode_metadata_generator.py Python\bytecodes.c"
           WorkingDirectory="$(PySourcePath)" />
     <Exec Command="$(PythonForBuild) Tools\cases_generator\uop_metadata_generator.py Python\bytecodes.c"
diff --git a/Tools/cases_generator/README.md b/Tools/cases_generator/README.md
index fb512c4646b851..02dd9c46f4a767 100644
--- a/Tools/cases_generator/README.md
+++ b/Tools/cases_generator/README.md
@@ -16,6 +16,9 @@ What's currently here:
 - `optimizer_generator.py`: reads `Python/bytecodes.c` and
   `Python/optimizer_bytecodes.c` and writes
   `Python/optimizer_cases.c.h`
+- `partial_evaluator_generator.py`: reads `Python/bytecodes.c` and
+  `Python/partial_evaluator_bytecodes.c` and writes
+  `Python/partial_evaluator_cases.c.h`
 - `stack.py`: code to handle generalized stack effects
 - `cwriter.py`: code which understands tokens and how to format C code;
   main class: `CWriter`