diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a48923f..41534b0 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9']
+        python-version: ['3.8', '3.9', '3.10']
     steps:
     - uses: actions/checkout@v2
     - uses: actions/setup-python@v2
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c1d96d3..401021f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,7 +33,7 @@ Before submitting a bug, please do the following:
 
 Make sure your report gets the attention it deserves: bug reports with missing information may be ignored or punted back to you, delaying a fix.  The below constitutes a bare minimum; more info is almost always better:
 
-* __What version of Python are you using?__ For example, are you using Python 2.7, Python 3.7, PyPy 2.0?
+* __What version of Python are you using?__ For example, are you using Python 3.8+, PyPy 2.0?
 * __What operating system are you using?__ Windows (7, 8, 10, 32-bit, 64-bit), Mac OS X,  (10.7.4, 10.9.0), GNU/Linux (which distribution, which version?) Again, more detail is better.
 * __Which version or versions of the software are you using?__ Ideally, you've followed the advice above and are on the latest version, but please confirm this.
 * __How can the we recreate your problem?__ Imagine that we have never used pygeofilter before and have downloaded it for the first time. Exactly what steps do we need to take to reproduce your problem?
diff --git a/pygeofilter/parsers/cql2_text/parser.py b/pygeofilter/parsers/cql2_text/parser.py
index b61a6e5..ff1cd34 100644
--- a/pygeofilter/parsers/cql2_text/parser.py
+++ b/pygeofilter/parsers/cql2_text/parser.py
@@ -38,7 +38,7 @@
 logger.setLevel(logging.DEBUG)
 
 
-@v_args(inline=True)
+@v_args(meta=False, inline=True)
 class CQLTransformer(WKTTransformer, ISO8601Transformer):
     def and_(self, *args):
         return ast.And.from_items(*args)
@@ -202,6 +202,7 @@ def interval(self, start, end):
     rel_to=__file__,
     parser="lalr",
     debug=True,
+    maybe_placeholders=False,
     transformer=CQLTransformer(),
     import_paths=[os.path.dirname(os.path.dirname(__file__))],
 )
diff --git a/pygeofilter/parsers/ecql/parser.py b/pygeofilter/parsers/ecql/parser.py
index 2a1c4f7..48a2b63 100644
--- a/pygeofilter/parsers/ecql/parser.py
+++ b/pygeofilter/parsers/ecql/parser.py
@@ -48,7 +48,7 @@
 }
 
 
-@v_args(inline=True)
+@v_args(meta=False, inline=True)
 class ECQLTransformer(WKTTransformer, ISO8601Transformer):
     def and_(self, lhs, rhs):
         return ast.And(lhs, rhs)
@@ -201,6 +201,7 @@ def envelope(self, x1, x2, y1, y2):
     rel_to=__file__,
     parser="lalr",
     debug=True,
+    maybe_placeholders=False,
     transformer=ECQLTransformer(),
     import_paths=[os.path.dirname(os.path.dirname(__file__))],
 )
diff --git a/pygeofilter/parsers/iso8601.py b/pygeofilter/parsers/iso8601.py
index 30ab90a..0de92d3 100644
--- a/pygeofilter/parsers/iso8601.py
+++ b/pygeofilter/parsers/iso8601.py
@@ -30,7 +30,7 @@
 from ..util import parse_datetime, parse_duration
 
 
-@v_args(inline=True)
+@v_args(meta=False, inline=True)
 class ISO8601Transformer(Transformer):
     def DATETIME(self, dt):
         return parse_datetime(dt)
diff --git a/pygeofilter/parsers/wkt.py b/pygeofilter/parsers/wkt.py
index 8416a78..bf9c530 100644
--- a/pygeofilter/parsers/wkt.py
+++ b/pygeofilter/parsers/wkt.py
@@ -28,7 +28,7 @@
 from lark import Transformer, v_args
 
 
-@v_args(inline=True)
+@v_args(meta=False, inline=True)
 class WKTTransformer(Transformer):
     def wkt__geometry_with_srid(self, srid, geometry):
         print(srid, geometry)
diff --git a/setup.py b/setup.py
index ef4c772..a11620d 100644
--- a/setup.py
+++ b/setup.py
@@ -57,7 +57,7 @@
     install_requires=(
         [
             "dateparser",
-            "lark<1.0",
+            "lark",
             "pygeoif>=1.0.0",
             "dataclasses;python_version<'3.7'",
         ]
@@ -76,10 +76,11 @@
         "Intended Audience :: Developers",
         "Topic :: Scientific/Engineering :: GIS",
         "License :: OSI Approved :: MIT License",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     tests_require=["pytest"],
 )