diff --git a/exercises/accumulate/HINTS.md b/exercises/accumulate/.meta/hints.md
similarity index 100%
rename from exercises/accumulate/HINTS.md
rename to exercises/accumulate/.meta/hints.md
diff --git a/exercises/allergies/HINTS.md b/exercises/allergies/.meta/hints.md
similarity index 100%
rename from exercises/allergies/HINTS.md
rename to exercises/allergies/.meta/hints.md
diff --git a/exercises/alphametics/HINTS.md b/exercises/alphametics/.meta/hints.md
similarity index 100%
rename from exercises/alphametics/HINTS.md
rename to exercises/alphametics/.meta/hints.md
diff --git a/exercises/bank-account/HINTS.md b/exercises/bank-account/.meta/hints.md
similarity index 100%
rename from exercises/bank-account/HINTS.md
rename to exercises/bank-account/.meta/hints.md
diff --git a/exercises/beer-song/HINTS.md b/exercises/beer-song/.meta/hints.md
similarity index 100%
rename from exercises/beer-song/HINTS.md
rename to exercises/beer-song/.meta/hints.md
diff --git a/exercises/clock/HINTS.md b/exercises/clock/.meta/hints.md
similarity index 100%
rename from exercises/clock/HINTS.md
rename to exercises/clock/.meta/hints.md
diff --git a/exercises/custom-set/HINTS.md b/exercises/custom-set/.meta/hints.md
similarity index 100%
rename from exercises/custom-set/HINTS.md
rename to exercises/custom-set/.meta/hints.md
diff --git a/exercises/diamond/HINTS.md b/exercises/diamond/.meta/hints.md
similarity index 100%
rename from exercises/diamond/HINTS.md
rename to exercises/diamond/.meta/hints.md
diff --git a/exercises/difference-of-squares/HINTS.md b/exercises/difference-of-squares/.meta/hints.md
similarity index 100%
rename from exercises/difference-of-squares/HINTS.md
rename to exercises/difference-of-squares/.meta/hints.md
diff --git a/exercises/diffie-hellman/HINTS.md b/exercises/diffie-hellman/.meta/hints.md
similarity index 100%
rename from exercises/diffie-hellman/HINTS.md
rename to exercises/diffie-hellman/.meta/hints.md
diff --git a/exercises/dot-dsl/HINTS.md b/exercises/dot-dsl/.meta/hints.md
similarity index 100%
rename from exercises/dot-dsl/HINTS.md
rename to exercises/dot-dsl/.meta/hints.md
diff --git a/exercises/food-chain/HINTS.md b/exercises/food-chain/.meta/hints.md
similarity index 100%
rename from exercises/food-chain/HINTS.md
rename to exercises/food-chain/.meta/hints.md
diff --git a/exercises/forth/HINTS.md b/exercises/forth/.meta/hints.md
similarity index 100%
rename from exercises/forth/HINTS.md
rename to exercises/forth/.meta/hints.md
diff --git a/exercises/hangman/HINTS.md b/exercises/hangman/.meta/hints.md
similarity index 100%
rename from exercises/hangman/HINTS.md
rename to exercises/hangman/.meta/hints.md
diff --git a/exercises/house/HINTS.md b/exercises/house/.meta/hints.md
similarity index 100%
rename from exercises/house/HINTS.md
rename to exercises/house/.meta/hints.md
diff --git a/exercises/list-ops/HINTS.md b/exercises/list-ops/.meta/hints.md
similarity index 100%
rename from exercises/list-ops/HINTS.md
rename to exercises/list-ops/.meta/hints.md
diff --git a/exercises/markdown/HINTS.md b/exercises/markdown/.meta/hints.md
similarity index 100%
rename from exercises/markdown/HINTS.md
rename to exercises/markdown/.meta/hints.md
diff --git a/exercises/nth-prime/HINTS.md b/exercises/nth-prime/.meta/hints.md
similarity index 100%
rename from exercises/nth-prime/HINTS.md
rename to exercises/nth-prime/.meta/hints.md
diff --git a/exercises/nucleotide-count/HINTS.md b/exercises/nucleotide-count/.meta/hints.md
similarity index 100%
rename from exercises/nucleotide-count/HINTS.md
rename to exercises/nucleotide-count/.meta/hints.md
diff --git a/exercises/palindrome-products/HINTS.md b/exercises/palindrome-products/.meta/hints.md
similarity index 100%
rename from exercises/palindrome-products/HINTS.md
rename to exercises/palindrome-products/.meta/hints.md
diff --git a/exercises/proverb/HINTS.md b/exercises/proverb/.meta/hints.md
similarity index 100%
rename from exercises/proverb/HINTS.md
rename to exercises/proverb/.meta/hints.md
diff --git a/exercises/react/HINTS.md b/exercises/react/.meta/hints.md
similarity index 100%
rename from exercises/react/HINTS.md
rename to exercises/react/.meta/hints.md
diff --git a/exercises/roman-numerals/HINTS.md b/exercises/roman-numerals/.meta/hints.md
similarity index 100%
rename from exercises/roman-numerals/HINTS.md
rename to exercises/roman-numerals/.meta/hints.md
diff --git a/exercises/saddle-points/HINTS.md b/exercises/saddle-points/.meta/hints.md
similarity index 100%
rename from exercises/saddle-points/HINTS.md
rename to exercises/saddle-points/.meta/hints.md
diff --git a/exercises/sgf-parsing/HINTS.md b/exercises/sgf-parsing/.meta/hints.md
similarity index 100%
rename from exercises/sgf-parsing/HINTS.md
rename to exercises/sgf-parsing/.meta/hints.md
diff --git a/exercises/simple-linked-list/HINTS.md b/exercises/simple-linked-list/.meta/hints.md
similarity index 100%
rename from exercises/simple-linked-list/HINTS.md
rename to exercises/simple-linked-list/.meta/hints.md
diff --git a/exercises/sublist/HINTS.md b/exercises/sublist/.meta/hints.md
similarity index 100%
rename from exercises/sublist/HINTS.md
rename to exercises/sublist/.meta/hints.md
diff --git a/exercises/sum-of-multiples/HINTS.md b/exercises/sum-of-multiples/.meta/hints.md
similarity index 100%
rename from exercises/sum-of-multiples/HINTS.md
rename to exercises/sum-of-multiples/.meta/hints.md
diff --git a/exercises/twelve-days/HINTS.md b/exercises/twelve-days/.meta/hints.md
similarity index 100%
rename from exercises/twelve-days/HINTS.md
rename to exercises/twelve-days/.meta/hints.md
diff --git a/exercises/variable-length-quantity/HINTS.md b/exercises/variable-length-quantity/.meta/hints.md
similarity index 100%
rename from exercises/variable-length-quantity/HINTS.md
rename to exercises/variable-length-quantity/.meta/hints.md
diff --git a/exercises/word-search/HINTS.md b/exercises/word-search/.meta/hints.md
similarity index 100%
rename from exercises/word-search/HINTS.md
rename to exercises/word-search/.meta/hints.md
diff --git a/exercises/wordy/HINTS.md b/exercises/wordy/.meta/hints.md
similarity index 100%
rename from exercises/wordy/HINTS.md
rename to exercises/wordy/.meta/hints.md
diff --git a/exercises/zebra-puzzle/HINTS.md b/exercises/zebra-puzzle/.meta/hints.md
similarity index 100%
rename from exercises/zebra-puzzle/HINTS.md
rename to exercises/zebra-puzzle/.meta/hints.md
diff --git a/exercises/zipper/HINTS.md b/exercises/zipper/.meta/hints.md
similarity index 100%
rename from exercises/zipper/HINTS.md
rename to exercises/zipper/.meta/hints.md