diff --git a/src/freqs/cli/import/reading.rs b/src/freqs/cli/import/reading.rs
index 51787886..110e63e0 100644
--- a/src/freqs/cli/import/reading.rs
+++ b/src/freqs/cli/import/reading.rs
@@ -237,7 +237,7 @@ mod test {
     #[test]
     fn guess_assembly_helix_chrmt_ambiguous_ok_initial_none() -> Result<(), anyhow::Error> {
         let path = "tests/freqs/reading/helix.chrM.vcf";
-        let mut reader = noodles_vcf::reader::Builder.build_from_path(path)?;
+        let mut reader = noodles_vcf::reader::Builder::default().build_from_path(path)?;
         let header = reader.read_header()?;
 
         let actual = guess_assembly(&header, true, None)?;
@@ -249,7 +249,7 @@ mod test {
     #[test]
     fn guess_assembly_helix_chrmt_ambiguous_ok_initial_override() -> Result<(), anyhow::Error> {
         let path = "tests/freqs/reading/helix.chrM.vcf";
-        let mut reader = noodles_vcf::reader::Builder.build_from_path(path)?;
+        let mut reader = noodles_vcf::reader::Builder::default().build_from_path(path)?;
         let header = reader.read_header()?;
 
         let actual = guess_assembly(&header, true, Some(Assembly::Grch37p10))?;
@@ -262,7 +262,7 @@ mod test {
     fn guess_assembly_helix_chrmt_ambiguous_ok_initial_override_fails() -> Result<(), anyhow::Error>
     {
         let path = "tests/freqs/reading/helix.chrM.vcf";
-        let mut reader = noodles_vcf::reader::Builder.build_from_path(path)?;
+        let mut reader = noodles_vcf::reader::Builder::default().build_from_path(path)?;
         let header = reader.read_header()?;
 
         assert!(guess_assembly(&header, false, Some(Assembly::Grch37)).is_err());
@@ -273,7 +273,7 @@ mod test {
     #[test]
     fn guess_assembly_helix_chrmt_ambiguous_fail() -> Result<(), anyhow::Error> {
         let path = "tests/freqs/reading/helix.chrM.vcf";
-        let mut reader = noodles_vcf::reader::Builder.build_from_path(path)?;
+        let mut reader = noodles_vcf::reader::Builder::default().build_from_path(path)?;
         let header = reader.read_header()?;
 
         assert!(guess_assembly(&header, false, None).is_err());
diff --git a/src/gnomad_pbs/gnomad2.rs b/src/gnomad_pbs/gnomad2.rs
index a0e4fcc6..6726819b 100644
--- a/src/gnomad_pbs/gnomad2.rs
+++ b/src/gnomad_pbs/gnomad2.rs
@@ -434,7 +434,7 @@ mod test {
     #[test]
     fn test_record_from_vcf_allele_gnomad_exomes_grch37() -> Result<(), anyhow::Error> {
         let path_vcf = "tests/gnomad-nuclear/example-exomes-grch37/gnomad-exomes.vcf";
-        let mut reader_vcf = noodles_vcf::reader::Builder.build_from_path(path_vcf)?;
+        let mut reader_vcf = noodles_vcf::reader::Builder::default().build_from_path(path_vcf)?;
         let header = reader_vcf.read_header()?;
 
         let mut records = Vec::new();
@@ -453,7 +453,7 @@ mod test {
     #[test]
     fn test_record_from_vcf_allele_gnomad_genomes_grch37() -> Result<(), anyhow::Error> {
         let path_vcf = "tests/gnomad-nuclear/example-genomes-grch37/gnomad-genomes.vcf";
-        let mut reader_vcf = noodles_vcf::reader::Builder.build_from_path(path_vcf)?;
+        let mut reader_vcf = noodles_vcf::reader::Builder::default().build_from_path(path_vcf)?;
         let header = reader_vcf.read_header()?;
 
         let mut records = Vec::new();
@@ -472,7 +472,7 @@ mod test {
     #[test]
     fn test_record_from_vcf_allele_gnomad_exomes_grch38() -> Result<(), anyhow::Error> {
         let path_vcf = "tests/gnomad-nuclear/example-exomes-grch38/gnomad-exomes.vcf";
-        let mut reader_vcf = noodles_vcf::reader::Builder.build_from_path(path_vcf)?;
+        let mut reader_vcf = noodles_vcf::reader::Builder::default().build_from_path(path_vcf)?;
         let header = reader_vcf.read_header()?;
 
         let mut records = Vec::new();
diff --git a/src/gnomad_pbs/gnomad3.rs b/src/gnomad_pbs/gnomad3.rs
index 313b64cc..05f15573 100644
--- a/src/gnomad_pbs/gnomad3.rs
+++ b/src/gnomad_pbs/gnomad3.rs
@@ -407,7 +407,7 @@ mod test {
     #[test]
     fn test_record_from_vcf_allele_gnomad_genomes_grch38() -> Result<(), anyhow::Error> {
         let path_vcf = "tests/gnomad-nuclear/example-genomes-grch38/gnomad-genomes.vcf";
-        let mut reader_vcf = noodles_vcf::reader::Builder.build_from_path(path_vcf)?;
+        let mut reader_vcf = noodles_vcf::reader::Builder::default().build_from_path(path_vcf)?;
         let header = reader_vcf.read_header()?;
 
         let mut records = Vec::new();
diff --git a/src/gnomad_pbs/mtdna.rs b/src/gnomad_pbs/mtdna.rs
index f352a281..1b1141e5 100644
--- a/src/gnomad_pbs/mtdna.rs
+++ b/src/gnomad_pbs/mtdna.rs
@@ -308,7 +308,7 @@ mod test {
     #[test]
     fn test_record_from_vcf_allele() -> Result<(), anyhow::Error> {
         let path_vcf = "tests/gnomad-mtdna/example/gnomad-mtdna.vcf";
-        let mut reader_vcf = noodles_vcf::reader::Builder.build_from_path(path_vcf)?;
+        let mut reader_vcf = noodles_vcf::reader::Builder::default().build_from_path(path_vcf)?;
         let header = reader_vcf.read_header()?;
 
         let mut records = Vec::new();