diff --git a/py/src/pycodata/Makefile b/py/src/pycodata/Makefile
index b0b5769..c225e28 100644
--- a/py/src/pycodata/Makefile
+++ b/py/src/pycodata/Makefile
@@ -6,35 +6,15 @@ AST_DIR=../../../data
 
 AST_SRC=$(wildcard $(AST_DIR)/*.toml)
 CPYTHON = cpy_codata_constants_2010.c cpy_codata_constants_2014.c cpy_codata_constants_2018.c cpy_codata_constants_2022.c
-PYTHON = constants_2010.py constants_2014.py constants_2018.py constants_2022.py
+PYTHON = codata_constants_2010.py codata_constants_2014.py codata_constants_2018.py codata_constants_2022.py
 
 .PHONY: clean
 
 # all: $(CPYTHON) $(PYTHON)
 all: $(PYTHON)
 
-cpy_codata_constants_2010.c: $(AST_DIR)/codata_2010.toml
-	$(PY) $(GEN) $< $@
 
-cpy_codata_constants_2014.c: $(AST_DIR)/codata_2014.toml
-	$(PY) $(GEN) $< $@
-
-cpy_codata_constants_2018.c: $(AST_DIR)/codata_2018.toml
-	$(PY) $(GEN) $< $@
-
-cpy_codata_constants_2022.c: $(AST_DIR)/codata_2022.toml
-	$(PY) $(GEN) $< $@
-
-constants_2010.py: $(AST_DIR)/codata_2010.toml
-	$(PY) $(GENPY) $< $@
-
-constants_2014.py: $(AST_DIR)/codata_2014.toml
-	$(PY) $(GENPY) $< $@
-
-constants_2018.py: $(AST_DIR)/codata_2018.toml
-	$(PY) $(GENPY) $< $@
-
-constants_2022.py: $(AST_DIR)/codata_2022.toml
+%.py: $(AST_DIR)/%.toml
 	$(PY) $(GENPY) $< $@
 
 clean: