diff --git a/linters/mypy/mypy.test.ts b/linters/mypy/mypy.test.ts
index 45a651d30..639304d12 100644
--- a/linters/mypy/mypy.test.ts
+++ b/linters/mypy/mypy.test.ts
@@ -7,7 +7,7 @@ const versionGreaterThanOrEqual = (a: string, b: string) => [a.split(".")] >= [b
 const manualVersionReplacer = (version: string) => {
   const [major, minor] = version.split(".").map((part) => Number.parseInt(part, 10));
   if (!Number.isNaN(major) && !Number.isNaN(minor) && major === 1 && minor >= 20) {
-    return "1.18.2";
+    return "1.20.2";
   }
   return version;
 };
diff --git a/linters/mypy/plugin.yaml b/linters/mypy/plugin.yaml
index 602fef806..aa4fde671 100644
--- a/linters/mypy/plugin.yaml
+++ b/linters/mypy/plugin.yaml
@@ -5,7 +5,7 @@ tools:
       runtime: python
       package: mypy
       shims: [mypy]
-      known_good_version: 1.18.2
+      known_good_version: 1.20.2
 lint:
   definitions:
     - name: mypy
@@ -14,6 +14,18 @@ lint:
       commands:
         - name: lint
           # Custom parser type defined in the trunk cli to handle mypy's output.
+          version: ">=1.20.0"
+          output: mypy
+          run:
+            mypy --ignore-missing-imports --follow-imports=silent --show-error-codes
+            --show-column-numbers --no-incremental ${target}
+          run_from: ${root_or_parent_with_any_config}
+          batch: true
+          success_codes: [0, 1]
+          stdin: false
+        - name: lint
+          # Custom parser type defined in the trunk cli to handle mypy's output.
+          version: <1.20.0
           output: mypy
           run:
             mypy --ignore-missing-imports --follow-imports=silent --show-error-codes
@@ -30,7 +42,7 @@ lint:
         - setup.cfg
       suggest_if: config_present
       issue_url_format: https://mypy.readthedocs.io/en/stable/error_code_list.html
-      known_good_version: 1.18.2
+      known_good_version: 1.20.2
       version_command:
         parse_regex: ${semver}
         run: mypy --version
diff --git a/linters/mypy/test_data/mypy_v1.20.2_CUSTOM.check.shot b/linters/mypy/test_data/mypy_v1.20.2_CUSTOM.check.shot
new file mode 100644
index 000000000..c88c849d4
--- /dev/null
+++ b/linters/mypy/test_data/mypy_v1.20.2_CUSTOM.check.shot
@@ -0,0 +1,141 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Testing linter mypy test CUSTOM 1`] = `
+{
+  "issues": [
+    {
+      "code": "arg-type",
+      "column": "10",
+      "file": "test_data/basic.py",
+      "issueClass": "ISSUE_CLASS_EXISTING",
+      "issueUrl": "https://mypy.readthedocs.io/en/stable/error_code_list.html",
+      "level": "LEVEL_HIGH",
+      "line": "13",
+      "linter": "mypy",
+      "message": "Argument 1 to "greeting" has incompatible type "int"; expected "str"",
+      "targetType": "python",
+    },
+    {
+      "code": "arg-type",
+      "column": "10",
+      "file": "test_data/basic.py",
+      "issueClass": "ISSUE_CLASS_EXISTING",
+      "issueUrl": "https://mypy.readthedocs.io/en/stable/error_code_list.html",
+      "level": "LEVEL_HIGH",
+      "line": "14",
+      "linter": "mypy",
+      "message": "Argument 1 to "greeting" has incompatible type "bytes"; expected "str"",
+      "targetType": "python",
+    },
+    {
+      "code": "func-returns-value",
+      "column": "5",
+      "file": "test_data/basic.py",
+      "issueClass": "ISSUE_CLASS_EXISTING",
+      "issueUrl": "https://mypy.readthedocs.io/en/stable/error_code_list.html",
+      "level": "LEVEL_HIGH",
+      "line": "15",
+      "linter": "mypy",
+      "message": ""printer" does not return a value (it only ever returns None)",
+      "targetType": "python",
+    },
+    {
+      "code": "assignment",
+      "column": "10",
+      "file": "test_data/basic.py",
+      "issueClass": "ISSUE_CLASS_EXISTING",
+      "issueUrl": "https://mypy.readthedocs.io/en/stable/error_code_list.html",
+      "level": "LEVEL_HIGH",
+      "line": "16",
+      "linter": "mypy",
+      "message": "Incompatible types in assignment (expression has type "int", variable has type "str")",
+      "targetType": "python",
+    },
+    {
+      "code": "attr-defined",
+      "column": "1",
+      "file": "test_data/basic.py",
+      "issueClass": "ISSUE_CLASS_EXISTING",
+      "issueUrl": "https://mypy.readthedocs.io/en/stable/error_code_list.html",
+      "level": "LEVEL_HIGH",
+      "line": "3",
+      "linter": "mypy",
+      "message": "Module "test_data" has no attribute "mypy_import2"",
+      "targetType": "python",
+    },
+    {
+      "code": "return",
+      "column": "1",
+      "file": "test_data/source.py",
+      "issueClass": "ISSUE_CLASS_EXISTING",
+      "issueUrl": "https://mypy.readthedocs.io/en/stable/error_code_list.html",
+      "level": "LEVEL_HIGH",
+      "line": "8",
+      "linter": "mypy",
+      "message": "Missing return statement",
+      "targetType": "python",
+    },
+  ],
+  "lintActions": [
+    {
+      "command": "lint",
+      "fileGroupName": "python",
+      "linter": "mypy",
+      "paths": [
+        "test_data/__init__.py",
+      ],
+      "verb": "TRUNK_VERB_CHECK",
+    },
+    {
+      "command": "lint",
+      "fileGroupName": "python",
+      "linter": "mypy",
+      "paths": [
+        "test_data/basic.py",
+      ],
+      "verb": "TRUNK_VERB_CHECK",
+    },
+    {
+      "command": "lint",
+      "fileGroupName": "python",
+      "linter": "mypy",
+      "paths": [
+        "test_data/source.py",
+      ],
+      "verb": "TRUNK_VERB_CHECK",
+    },
+    {
+      "command": "lint",
+      "fileGroupName": "python",
+      "linter": "mypy",
+      "paths": [
+        "test_data/__init__.py",
+      ],
+      "upstream": true,
+      "verb": "TRUNK_VERB_CHECK",
+    },
+    {
+      "command": "lint",
+      "fileGroupName": "python",
+      "linter": "mypy",
+      "paths": [
+        "test_data/basic.py",
+      ],
+      "upstream": true,
+      "verb": "TRUNK_VERB_CHECK",
+    },
+    {
+      "command": "lint",
+      "fileGroupName": "python",
+      "linter": "mypy",
+      "paths": [
+        "test_data/source.py",
+      ],
+      "upstream": true,
+      "verb": "TRUNK_VERB_CHECK",
+    },
+  ],
+  "taskFailures": [],
+  "unformattedFiles": [],
+}
+`;