diff --git a/mdformat_myst/plugin.py b/mdformat_myst/plugin.py
index 58c9622..e42ea16 100644
--- a/mdformat_myst/plugin.py
+++ b/mdformat_myst/plugin.py
@@ -13,8 +13,8 @@
 
 from mdformat_myst._directives import fence, render_fence_html
 
-_TARGET_PATTERN = re.compile(r"^\s*\(([a-zA-Z0-9|@<>*./_\-+:]{1,100})\)=\s*$")
-_ROLE_NAME_PATTERN = re.compile(r"({[a-zA-Z0-9_\-+:]{1,36}})")
+_TARGET_PATTERN = re.compile(r"^\s*\(.+\)=\s*$")
+_ROLE_NAME_PATTERN = re.compile(r"({[a-zA-Z0-9_\-+:]+})")
 
 
 def update_mdit(mdit: MarkdownIt) -> None:
@@ -82,7 +82,7 @@ def _math_block_renderer(node: RenderTreeNode, context: RenderContext) -> str:
     return f"$${node.content}$$"
 
 
-def _math_block_eqno_renderer(node: RenderTreeNode, context: RenderContext) -> str:
+def _math_block_label_renderer(node: RenderTreeNode, context: RenderContext) -> str:
     return f"$${node.content}$$ ({node.info})"
 
 
@@ -148,7 +148,7 @@ def _escape_text(text: str, node: RenderTreeNode, context: RenderContext) -> str
     "myst_block_break": _blockbreak_renderer,
     "myst_target": _target_renderer,
     "math_inline": _math_inline_renderer,
-    "math_block_eqno": _math_block_eqno_renderer,
+    "math_block_label": _math_block_label_renderer,
     "math_block": _math_block_renderer,
     "footnote": _footnote_renderer,
     "footnote_ref": _footnote_ref_renderer,
diff --git a/pyproject.toml b/pyproject.toml
index 5aa79d3..653fd72 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ keywords = "mdformat,markdown,formatter,gfm"
 requires-python=">=3.7"
 requires=[
     "mdformat >=0.7.0,<0.8.0",
-    "mdit-py-plugins >=0.2.7,<0.3.0",
+    "mdit-py-plugins >=0.3.0,<0.4.0",
     "mdformat-tables >=0.4.0",
     "mdformat-frontmatter >=0.3.2",
     "ruamel.yaml >=0.16.0"
diff --git a/tests/data/fixtures.md b/tests/data/fixtures.md
index 81819be..75bb4ad 100644
--- a/tests/data/fixtures.md
+++ b/tests/data/fixtures.md
@@ -128,10 +128,13 @@ That's a myst target^
 MyST Target escape
 .
 (myst_target\)=
-That's NOT a myst target^
+That's a myst target^
+The escape has no effect
 .
-\(myst_target)=
-That's NOT a myst target^
+(myst_target\)=
+
+That's a myst target^
+The escape has no effect
 .
 
 Dollarmath inline