diff --git a/martin/src/bin/martin-cp.rs b/martin/src/bin/martin-cp.rs
index 7fe50d156..897bc72ad 100644
--- a/martin/src/bin/martin-cp.rs
+++ b/martin/src/bin/martin-cp.rs
@@ -458,46 +458,31 @@ mod tests {
         let bbox_mi = Bounds::from_str("-86.6271,41.6811,-82.3095,45.8058").unwrap();
         let bbox_usa = Bounds::from_str("-124.8489,24.3963,-66.8854,49.3843").unwrap();
 
-        assert_yaml_snapshot!(compute_tile_ranges(&args(&[world], &[0])), @r###"
-        ---
-        - "0: (0,0) - (0,0)"
-        "###);
+        assert_yaml_snapshot!(compute_tile_ranges(&args(&[world], &[0])), @r#"- "0: (0,0) - (0,0)""#);
 
-        assert_yaml_snapshot!(compute_tile_ranges(&args(&[world], &[3,7])), @r###"
-        ---
+        assert_yaml_snapshot!(compute_tile_ranges(&args(&[world], &[3,7])), @r#"
         - "3: (0,0) - (7,7)"
         - "7: (0,0) - (127,127)"
-        "###);
+        "#);
 
-        assert_yaml_snapshot!(compute_tile_ranges(&arg_minmax(&[world], 2, 4)), @r###"
-        ---
+        assert_yaml_snapshot!(compute_tile_ranges(&arg_minmax(&[world], 2, 4)), @r#"
         - "2: (0,0) - (3,3)"
         - "3: (0,0) - (7,7)"
         - "4: (0,0) - (15,15)"
-        "###);
+        "#);
 
-        assert_yaml_snapshot!(compute_tile_ranges(&args(&[world], &[14])), @r###"
-        ---
-        - "14: (0,0) - (16383,16383)"
-        "###);
+        assert_yaml_snapshot!(compute_tile_ranges(&args(&[world], &[14])), @r#"- "14: (0,0) - (16383,16383)""#);
 
-        assert_yaml_snapshot!(compute_tile_ranges(&args(&[bbox_usa], &[14])), @r###"
-        ---
-        - "14: (2509,5599) - (5147,7046)"
-        "###);
+        assert_yaml_snapshot!(compute_tile_ranges(&args(&[bbox_usa], &[14])), @r#"- "14: (2509,5599) - (5147,7046)""#);
 
-        assert_yaml_snapshot!(compute_tile_ranges(&args(&[bbox_usa, bbox_mi, bbox_ca], &[14])), @r###"
-        ---
-        - "14: (2509,5599) - (5147,7046)"
-        "###);
+        assert_yaml_snapshot!(compute_tile_ranges(&args(&[bbox_usa, bbox_mi, bbox_ca], &[14])), @r#"- "14: (2509,5599) - (5147,7046)""#);
 
-        assert_yaml_snapshot!(compute_tile_ranges(&args(&[bbox_ca_south, bbox_mi, bbox_ca], &[14])), @r###"
-        ---
+        assert_yaml_snapshot!(compute_tile_ranges(&args(&[bbox_ca_south, bbox_mi, bbox_ca], &[14])), @r#"
         - "14: (2791,6499) - (2997,6624)"
         - "14: (4249,5841) - (4446,6101)"
         - "14: (2526,6081) - (2790,6624)"
         - "14: (2791,6081) - (2997,6498)"
-        "###);
+        "#);
     }
 
     fn args(bbox: &[Bounds], zooms: &[u8]) -> CopyArgs {
diff --git a/martin/src/pg/builder.rs b/martin/src/pg/builder.rs
index 4b88f2f93..cf81abc4b 100644
--- a/martin/src/pg/builder.rs
+++ b/martin/src/pg/builder.rs
@@ -496,95 +496,86 @@ mod tests {
     #[allow(clippy::too_many_lines)]
     fn test_auto_publish_no_auto() {
         let cfg = auto("{}");
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table:
-              source_id_format: "{table}"
-            auto_funcs:
-              source_id_format: "{function}"
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table:
+          source_id_format: "{table}"
+        auto_funcs:
+          source_id_format: "{function}"
+        "#);
 
         let cfg = auto("tables: {}");
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table: ~
-            auto_funcs: ~
-            "###);
+        assert_yaml_snapshot!(cfg, @r"
+        auto_table: ~
+        auto_funcs: ~
+        ");
 
         let cfg = auto("functions: {}");
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table: ~
-            auto_funcs: ~
-            "###);
+        assert_yaml_snapshot!(cfg, @r"
+        auto_table: ~
+        auto_funcs: ~
+        ");
 
         let cfg = auto("auto_publish: true");
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table:
-              source_id_format: "{table}"
-            auto_funcs:
-              source_id_format: "{function}"
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table:
+          source_id_format: "{table}"
+        auto_funcs:
+          source_id_format: "{function}"
+        "#);
 
         let cfg = auto("auto_publish: false");
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table: ~
-            auto_funcs: ~
-            "###);
+        assert_yaml_snapshot!(cfg, @r"
+        auto_table: ~
+        auto_funcs: ~
+        ");
 
         let cfg = auto(indoc! {"
             auto_publish:
                 from_schemas: public
                 tables: true"});
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table:
-              schemas:
-                - public
-              source_id_format: "{table}"
-            auto_funcs: ~
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table:
+          schemas:
+            - public
+          source_id_format: "{table}"
+        auto_funcs: ~
+        "#);
 
         let cfg = auto(indoc! {"
             auto_publish:
                 from_schemas: public
                 functions: true"});
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table: ~
-            auto_funcs:
-              schemas:
-                - public
-              source_id_format: "{function}"
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table: ~
+        auto_funcs:
+          schemas:
+            - public
+          source_id_format: "{function}"
+        "#);
 
         let cfg = auto(indoc! {"
             auto_publish:
                 from_schemas: public
                 tables: false"});
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table: ~
-            auto_funcs:
-              schemas:
-                - public
-              source_id_format: "{function}"
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table: ~
+        auto_funcs:
+          schemas:
+            - public
+          source_id_format: "{function}"
+        "#);
 
         let cfg = auto(indoc! {"
             auto_publish:
                 from_schemas: public
                 functions: false"});
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table:
-              schemas:
-                - public
-              source_id_format: "{table}"
-            auto_funcs: ~
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table:
+          schemas:
+            - public
+          source_id_format: "{table}"
+        auto_funcs: ~
+        "#);
 
         let cfg = auto(indoc! {"
             auto_publish:
@@ -592,15 +583,14 @@ mod tests {
                 tables:
                     from_schemas: osm
                     id_format: 'foo_{schema}.{table}_bar'"});
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table:
-              schemas:
-                - osm
-                - public
-              source_id_format: "foo_{schema}.{table}_bar"
-            auto_funcs: ~
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table:
+          schemas:
+            - osm
+            - public
+          source_id_format: "foo_{schema}.{table}_bar"
+        auto_funcs: ~
+        "#);
 
         let cfg = auto(indoc! {"
             auto_publish:
@@ -608,15 +598,14 @@ mod tests {
                 tables:
                     from_schemas: osm
                     source_id_format: '{schema}.{table}'"});
-        assert_yaml_snapshot!(cfg, @r###"
-        ---
+        assert_yaml_snapshot!(cfg, @r#"
         auto_table:
           schemas:
             - osm
             - public
           source_id_format: "{schema}.{table}"
         auto_funcs: ~
-        "###);
+        "#);
 
         let cfg = auto(indoc! {"
             auto_publish:
@@ -624,14 +613,13 @@ mod tests {
                     from_schemas:
                       - osm
                       - public"});
-        assert_yaml_snapshot!(cfg, @r###"
-            ---
-            auto_table:
-              schemas:
-                - osm
-                - public
-              source_id_format: "{table}"
-            auto_funcs: ~
-            "###);
+        assert_yaml_snapshot!(cfg, @r#"
+        auto_table:
+          schemas:
+            - osm
+            - public
+          source_id_format: "{table}"
+        auto_funcs: ~
+        "#);
     }
 }
diff --git a/martin/tests/mb_server_test.rs b/martin/tests/mb_server_test.rs
index 327a88fe4..19f053f4d 100644
--- a/martin/tests/mb_server_test.rs
+++ b/martin/tests/mb_server_test.rs
@@ -53,8 +53,7 @@ async fn mbt_get_catalog() {
     let response = call_service(&app, req).await;
     let response = assert_response(response).await;
     let body: serde_json::Value = read_body_json(response).await;
-    assert_yaml_snapshot!(body, @r###"
-    ---
+    assert_yaml_snapshot!(body, @r"
     fonts: {}
     sprites: {}
     tiles:
@@ -73,7 +72,7 @@ async fn mbt_get_catalog() {
       m_webp:
         content_type: image/webp
         name: ne2sr
-    "###);
+    ");
 }
 
 #[actix_rt::test]
@@ -85,8 +84,7 @@ async fn mbt_get_catalog_gzip() {
     let response = assert_response(response).await;
     let body = decode_gzip(&read_body(response).await).unwrap();
     let body: serde_json::Value = serde_json::from_slice(&body).unwrap();
-    assert_yaml_snapshot!(body, @r###"
-    ---
+    assert_yaml_snapshot!(body, @r"
     fonts: {}
     sprites: {}
     tiles:
@@ -105,7 +103,7 @@ async fn mbt_get_catalog_gzip() {
       m_webp:
         content_type: image/webp
         name: ne2sr
-    "###);
+    ");
 }
 
 #[actix_rt::test]
diff --git a/martin/tests/pg_function_source_test.rs b/martin/tests/pg_function_source_test.rs
index f10af4829..cf7d81718 100644
--- a/martin/tests/pg_function_source_test.rs
+++ b/martin/tests/pg_function_source_test.rs
@@ -17,14 +17,13 @@ fn init() {
 async fn function_source_tilejson() {
     let mock = mock_sources(mock_pgcfg("connection_string: $DATABASE_URL")).await;
     let tj = source(&mock, "function_zxy_query").get_tilejson();
-    assert_yaml_snapshot!(tj, @r###"
-    ---
+    assert_yaml_snapshot!(tj, @r"
     tilejson: 3.0.0
     tiles: []
     name: function_zxy_query
     foo:
       bar: foo
-    "###);
+    ");
 }
 
 #[actix_rt::test]
@@ -55,10 +54,9 @@ async fn function_source_schemas() {
             from_schemas: MixedCase
     "});
     let sources = mock_sources(cfg).await.0.tiles;
-    assert_yaml_snapshot!(sources.get_catalog(), @r###"
-    ---
+    assert_yaml_snapshot!(sources.get_catalog(), @r"
     function_Mixed_Name:
       content_type: application/x-protobuf
       description: a function source with MixedCase name
-    "###);
+    ");
 }
diff --git a/martin/tests/pg_server_test.rs b/martin/tests/pg_server_test.rs
index 7fa96d2cf..34ca2dc0d 100644
--- a/martin/tests/pg_server_test.rs
+++ b/martin/tests/pg_server_test.rs
@@ -53,7 +53,6 @@ postgres:
     let body = read_body(response).await;
     let body: serde_json::Value = serde_json::from_slice(&body).unwrap();
     assert_yaml_snapshot!(body, @r#"
-    ---
     fonts: {}
     sprites: {}
     tiles:
@@ -188,8 +187,7 @@ postgres:
         .insert_header(("x-rewrite-url", "/tiles/table_source?token=martin"))
         .to_request();
     let result: TileJSON = call_and_read_body_json(&app, req).await;
-    assert_yaml_snapshot!(result, @r###"
-    ---
+    assert_yaml_snapshot!(result, @r#"
     tilejson: 3.0.0
     tiles:
       - "http://localhost:8080/tiles/table_source/{z}/{x}/{y}?token=martin"
@@ -205,7 +203,7 @@ postgres:
     name: table_source
     foo:
       bar: foo
-    "###);
+    "#);
 }
 
 #[actix_rt::test]
@@ -1025,8 +1023,7 @@ tables:
     assert_eq!(src.id_column, None);
     assert!(matches!(&src.properties, Some(v) if v.len() == 1));
     let tj = source(&mock, "no_id").get_tilejson();
-    assert_yaml_snapshot!(tj, @r###"
-    ---
+    assert_yaml_snapshot!(tj, @r"
     tilejson: 3.0.0
     tiles: []
     vector_layers:
@@ -1041,10 +1038,9 @@ tables:
       - 90
     description: a description from comment on table
     name: no_id
-    "###);
+    ");
 
-    assert_yaml_snapshot!(table(&mock, "id_only"), @r###"
-    ---
+    assert_yaml_snapshot!(table(&mock, "id_only"), @r"
     schema: MixedCase
     table: MixPoints
     srid: 4326
@@ -1058,10 +1054,9 @@ tables:
     geometry_type: POINT
     properties:
       TABLE: text
-    "###);
+    ");
 
-    assert_yaml_snapshot!(table(&mock, "id_and_prop"), @r###"
-    ---
+    assert_yaml_snapshot!(table(&mock, "id_and_prop"), @r"
     schema: MixedCase
     table: MixPoints
     srid: 4326
@@ -1076,10 +1071,9 @@ tables:
     properties:
       TABLE: text
       giD: int4
-    "###);
+    ");
 
-    assert_yaml_snapshot!(table(&mock, "prop_only"), @r###"
-    ---
+    assert_yaml_snapshot!(table(&mock, "prop_only"), @r"
     schema: MixedCase
     table: MixPoints
     srid: 4326
@@ -1093,7 +1087,7 @@ tables:
     properties:
       TABLE: text
       giD: int4
-    "###);
+    ");
 
     // --------------------------------------------
 
diff --git a/martin/tests/pg_table_source_test.rs b/martin/tests/pg_table_source_test.rs
index 9628d58eb..7b1cbd6b4 100644
--- a/martin/tests/pg_table_source_test.rs
+++ b/martin/tests/pg_table_source_test.rs
@@ -16,7 +16,6 @@ fn init() {
 async fn table_source() {
     let mock = mock_sources(mock_pgcfg("connection_string: $DATABASE_URL")).await;
     assert_yaml_snapshot!(mock.0.tiles.get_catalog(), @r#"
-    ---
     "-function.withweired---_-characters":
       content_type: application/x-protobuf
       description: a function source with special characters
@@ -91,8 +90,7 @@ async fn table_source() {
     "#);
 
     let source = table(&mock, "table_source");
-    assert_yaml_snapshot!(source, @r###"
-    ---
+    assert_yaml_snapshot!(source, @r"
     schema: public
     table: table_source
     srid: 4326
@@ -105,15 +103,14 @@ async fn table_source() {
     geometry_type: GEOMETRY
     properties:
       gid: int4
-    "###);
+    ");
 }
 
 #[actix_rt::test]
 async fn tables_tilejson() {
     let mock = mock_sources(mock_pgcfg("connection_string: $DATABASE_URL")).await;
     let tj = source(&mock, "table_source").get_tilejson();
-    assert_yaml_snapshot!(tj, @r###"
-    ---
+    assert_yaml_snapshot!(tj, @r"
     tilejson: 3.0.0
     tiles: []
     vector_layers:
@@ -128,7 +125,7 @@ async fn tables_tilejson() {
     name: table_source
     foo:
       bar: foo
-    "###);
+    ");
 }
 
 #[actix_rt::test]
@@ -184,10 +181,9 @@ async fn table_source_schemas() {
           functions: false
     "});
     let sources = mock_sources(cfg).await.0;
-    assert_yaml_snapshot!(sources.tiles.get_catalog(), @r###"
-    ---
+    assert_yaml_snapshot!(sources.tiles.get_catalog(), @r"
     MixPoints:
       content_type: application/x-protobuf
       description: a description from comment on table
-    "###);
+    ");
 }
diff --git a/martin/tests/pmt_server_test.rs b/martin/tests/pmt_server_test.rs
index 63e8f775c..a7a26bbd6 100644
--- a/martin/tests/pmt_server_test.rs
+++ b/martin/tests/pmt_server_test.rs
@@ -51,14 +51,13 @@ async fn pmt_get_catalog() {
     let response = call_service(&app, req).await;
     let response = assert_response(response).await;
     let body: serde_json::Value = read_body_json(response).await;
-    assert_yaml_snapshot!(body, @r###"
-    ---
+    assert_yaml_snapshot!(body, @r"
     fonts: {}
     sprites: {}
     tiles:
       stamen_toner__raster_CC-BY-ODbL_z3:
         content_type: image/png
-    "###);
+    ");
 }
 
 #[actix_rt::test]
@@ -70,14 +69,13 @@ async fn pmt_get_catalog_gzip() {
     let response = assert_response(response).await;
     let body = decode_gzip(&read_body(response).await).unwrap();
     let body: serde_json::Value = serde_json::from_slice(&body).unwrap();
-    assert_yaml_snapshot!(body, @r###"
-    ---
+    assert_yaml_snapshot!(body, @r"
     fonts: {}
     sprites: {}
     tiles:
       p_png:
         content_type: image/png
-    "###);
+    ");
 }
 
 #[actix_rt::test]
diff --git a/mbtiles/src/summary.rs b/mbtiles/src/summary.rs
index 095a194a7..c63082c7e 100644
--- a/mbtiles/src/summary.rs
+++ b/mbtiles/src/summary.rs
@@ -202,8 +202,7 @@ mod tests {
 
         init_mbtiles_schema(&mut conn, MbtType::Flat).await.unwrap();
         let res = mbt.summary(&mut conn).await?;
-        assert_yaml_snapshot!(res, @r###"
-        ---
+        assert_yaml_snapshot!(res, @r"
         file_size: ~
         mbt_type: Flat
         page_size: 512
@@ -216,7 +215,7 @@ mod tests {
         min_zoom: ~
         max_zoom: ~
         zoom_info: []
-        "###);
+        ");
 
         Ok(())
     }
@@ -228,8 +227,7 @@ mod tests {
 
         let res = mbt.summary(&mut conn).await?;
 
-        assert_yaml_snapshot!(res, @r###"
-        ---
+        assert_yaml_snapshot!(res, @r"
         file_size: 49152
         mbt_type: Flat
         page_size: 4096
@@ -316,7 +314,7 @@ mod tests {
               - -40.97989806962015
               - 180.00000000000003
               - 61.60639637138628
-        "###);
+        ");
 
         Ok(())
     }