diff --git a/listings/basic-document-structure/headlines_crop.pdf b/listings/basic-document-structure/headlines_crop.pdf
index 096100b..adc1ea7 100644
Binary files a/listings/basic-document-structure/headlines_crop.pdf and b/listings/basic-document-structure/headlines_crop.pdf differ
diff --git a/listings/basic-document-structure/hello-world_crop.pdf b/listings/basic-document-structure/hello-world_crop.pdf
index 6114548..af4c823 100644
Binary files a/listings/basic-document-structure/hello-world_crop.pdf and b/listings/basic-document-structure/hello-world_crop.pdf differ
diff --git a/listings/basic-document-structure/titles_crop.pdf b/listings/basic-document-structure/titles_crop.pdf
index 1822b29..1cd534d 100644
Binary files a/listings/basic-document-structure/titles_crop.pdf and b/listings/basic-document-structure/titles_crop.pdf differ
diff --git a/listings/lists/description-list_crop.pdf b/listings/lists/description-list_crop.pdf
index 7965eea..6ebfcb9 100644
Binary files a/listings/lists/description-list_crop.pdf and b/listings/lists/description-list_crop.pdf differ
diff --git a/listings/literature/natdin-example_bib.pdf b/listings/literature/natdin-example_bib.pdf
index 5ace0a9..d221247 100644
Binary files a/listings/literature/natdin-example_bib.pdf and b/listings/literature/natdin-example_bib.pdf differ
diff --git a/listings/maths/align-example_crop.pdf b/listings/maths/align-example_crop.pdf
index 176fb6d..8afc58f 100644
Binary files a/listings/maths/align-example_crop.pdf and b/listings/maths/align-example_crop.pdf differ
diff --git a/listings/project-structure/main-file_crop.pdf b/listings/project-structure/main-file_crop.pdf
index a2aa6ef..be7f967 100644
Binary files a/listings/project-structure/main-file_crop.pdf and b/listings/project-structure/main-file_crop.pdf differ
diff --git a/listings/references/ref_crop.pdf b/listings/references/ref_crop.pdf
index 708e408..136d64c 100644
Binary files a/listings/references/ref_crop.pdf and b/listings/references/ref_crop.pdf differ
diff --git a/listings/source-code-listings/minted-environment_crop.pdf b/listings/source-code-listings/minted-environment_crop.pdf
index 0ce2668..0c56d33 100644
Binary files a/listings/source-code-listings/minted-environment_crop.pdf and b/listings/source-code-listings/minted-environment_crop.pdf differ