diff --git a/src/dscanner/analysis/alias_syntax_check.d b/src/dscanner/analysis/alias_syntax_check.d
index 515fa34..8989ffa 100644
--- a/src/dscanner/analysis/alias_syntax_check.d
+++ b/src/dscanner/analysis/alias_syntax_check.d
@@ -12,7 +12,7 @@ import dscanner.analysis.base;
 /**
  * Checks for uses of the old alias syntax.
  */
-class AliasSyntaxCheck : BaseAnalyzer
+final class AliasSyntaxCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/allman.d b/src/dscanner/analysis/allman.d
index dcfeb71..239faf0 100644
--- a/src/dscanner/analysis/allman.d
+++ b/src/dscanner/analysis/allman.d
@@ -25,7 +25,7 @@ if (param < 0)
 }
 ------------
 */
-class AllManCheck : BaseAnalyzer
+final class AllManCheck : BaseAnalyzer
 {
 	///
 	this(string fileName, const(Token)[] tokens, bool skipTests = false)
diff --git a/src/dscanner/analysis/asm_style.d b/src/dscanner/analysis/asm_style.d
index 30dd495..48da513 100644
--- a/src/dscanner/analysis/asm_style.d
+++ b/src/dscanner/analysis/asm_style.d
@@ -16,7 +16,7 @@ import dsymbol.scope_ : Scope;
  * Checks for confusing asm expressions.
  * See_also: $(LINK https://issues.dlang.org/show_bug.cgi?id=9738)
  */
-class AsmStyleCheck : BaseAnalyzer
+final class AsmStyleCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/assert_without_msg.d b/src/dscanner/analysis/assert_without_msg.d
index 476746d..c01dc5d 100644
--- a/src/dscanner/analysis/assert_without_msg.d
+++ b/src/dscanner/analysis/assert_without_msg.d
@@ -16,7 +16,7 @@ import std.algorithm;
 /**
  * Check that all asserts have an explanatory message.
  */
-class AssertWithoutMessageCheck : BaseAnalyzer
+final class AssertWithoutMessageCheck : BaseAnalyzer
 {
 	enum string KEY = "dscanner.style.assert_without_msg";
 	enum string MESSAGE = "An assert should have an explanatory message";
diff --git a/src/dscanner/analysis/auto_ref_assignment.d b/src/dscanner/analysis/auto_ref_assignment.d
index 96f20c7..d6495c9 100644
--- a/src/dscanner/analysis/auto_ref_assignment.d
+++ b/src/dscanner/analysis/auto_ref_assignment.d
@@ -12,7 +12,7 @@ import dscanner.analysis.base;
 /**
  * Checks for assignment to auto-ref function parameters.
  */
-class AutoRefAssignmentCheck : BaseAnalyzer
+final class AutoRefAssignmentCheck : BaseAnalyzer
 {
 	///
 	this(string fileName, bool skipTests = false)
diff --git a/src/dscanner/analysis/builtin_property_names.d b/src/dscanner/analysis/builtin_property_names.d
index 2c49636..d7de74a 100644
--- a/src/dscanner/analysis/builtin_property_names.d
+++ b/src/dscanner/analysis/builtin_property_names.d
@@ -27,7 +27,7 @@ import std.algorithm : map;
  * }
  * ---
  */
-class BuiltinPropertyNameCheck : BaseAnalyzer
+final class BuiltinPropertyNameCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/comma_expression.d b/src/dscanner/analysis/comma_expression.d
index 6bdbbfa..9ce4589 100644
--- a/src/dscanner/analysis/comma_expression.d
+++ b/src/dscanner/analysis/comma_expression.d
@@ -13,7 +13,7 @@ import dsymbol.scope_;
 /**
  * Check for uses of the comma expression.
  */
-class CommaExpressionCheck : BaseAnalyzer
+final class CommaExpressionCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/constructors.d b/src/dscanner/analysis/constructors.d
index 961f553..7efbd4d 100644
--- a/src/dscanner/analysis/constructors.d
+++ b/src/dscanner/analysis/constructors.d
@@ -7,7 +7,7 @@ import dscanner.analysis.base;
 import dscanner.analysis.helpers;
 import dsymbol.scope_ : Scope;
 
-class ConstructorCheck : BaseAnalyzer
+final class ConstructorCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/del.d b/src/dscanner/analysis/del.d
index e73fdb5..6162470 100644
--- a/src/dscanner/analysis/del.d
+++ b/src/dscanner/analysis/del.d
@@ -14,7 +14,7 @@ import dsymbol.scope_;
 /**
  * Checks for use of the deprecated 'delete' keyword
  */
-class DeleteCheck : BaseAnalyzer
+final class DeleteCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/duplicate_attribute.d b/src/dscanner/analysis/duplicate_attribute.d
index 8980c71..c1292fc 100644
--- a/src/dscanner/analysis/duplicate_attribute.d
+++ b/src/dscanner/analysis/duplicate_attribute.d
@@ -17,7 +17,7 @@ import dsymbol.scope_ : Scope;
  * Checks for duplicate attributes such as @property, @safe,
  * @trusted, @system, pure, and nothrow
  */
-class DuplicateAttributeCheck : BaseAnalyzer
+final class DuplicateAttributeCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/enumarrayliteral.d b/src/dscanner/analysis/enumarrayliteral.d
index d63bad6..68e25ca 100644
--- a/src/dscanner/analysis/enumarrayliteral.d
+++ b/src/dscanner/analysis/enumarrayliteral.d
@@ -15,7 +15,7 @@ void doNothing(string, size_t, size_t, string, bool)
 {
 }
 
-class EnumArrayLiteralCheck : BaseAnalyzer
+final class EnumArrayLiteralCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/explicitly_annotated_unittests.d b/src/dscanner/analysis/explicitly_annotated_unittests.d
index af5d396..87e830d 100644
--- a/src/dscanner/analysis/explicitly_annotated_unittests.d
+++ b/src/dscanner/analysis/explicitly_annotated_unittests.d
@@ -13,7 +13,7 @@ import std.stdio;
 /**
  * Requires unittests to be explicitly annotated with either @safe or @system
  */
-class ExplicitlyAnnotatedUnittestCheck : BaseAnalyzer
+final class ExplicitlyAnnotatedUnittestCheck : BaseAnalyzer
 {
 	enum string KEY = "dscanner.style.explicitly_annotated_unittest";
 	enum string MESSAGE = "A unittest should be annotated with at least @safe or @system";
diff --git a/src/dscanner/analysis/fish.d b/src/dscanner/analysis/fish.d
index 5414cfb..d09f4e2 100644
--- a/src/dscanner/analysis/fish.d
+++ b/src/dscanner/analysis/fish.d
@@ -15,7 +15,7 @@ import dsymbol.scope_ : Scope;
 /**
  * Checks for use of the deprecated floating point comparison operators.
  */
-class FloatOperatorCheck : BaseAnalyzer
+final class FloatOperatorCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/function_attributes.d b/src/dscanner/analysis/function_attributes.d
index 855f025..2c5ce9a 100644
--- a/src/dscanner/analysis/function_attributes.d
+++ b/src/dscanner/analysis/function_attributes.d
@@ -21,7 +21,7 @@ import dsymbol.scope_;
  * const int getStuff() {}
  * ---
  */
-class FunctionAttributeCheck : BaseAnalyzer
+final class FunctionAttributeCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/has_public_example.d b/src/dscanner/analysis/has_public_example.d
index 9c305fa..cdbe6dc 100644
--- a/src/dscanner/analysis/has_public_example.d
+++ b/src/dscanner/analysis/has_public_example.d
@@ -16,7 +16,7 @@ import std.stdio;
  * Checks for public declarations without a documented unittests.
  * For now, variable and enum declarations aren't checked.
  */
-class HasPublicExampleCheck : BaseAnalyzer
+final class HasPublicExampleCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/if_constraints_indent.d b/src/dscanner/analysis/if_constraints_indent.d
index 8ec348b..45087e3 100644
--- a/src/dscanner/analysis/if_constraints_indent.d
+++ b/src/dscanner/analysis/if_constraints_indent.d
@@ -15,7 +15,7 @@ import std.range;
 /**
 Checks whether all if constraints have the same indention as their declaration.
 */
-class IfConstraintsIndentCheck : BaseAnalyzer
+final class IfConstraintsIndentCheck : BaseAnalyzer
 {
 	///
 	this(string fileName, const(Token)[] tokens, bool skipTests = false)
diff --git a/src/dscanner/analysis/if_statements.d b/src/dscanner/analysis/if_statements.d
index 4b47cd4..7358d37 100644
--- a/src/dscanner/analysis/if_statements.d
+++ b/src/dscanner/analysis/if_statements.d
@@ -10,7 +10,7 @@ import dparse.formatter;
 import dscanner.analysis.base;
 import dsymbol.scope_ : Scope;
 
-class IfStatementCheck : BaseAnalyzer
+final class IfStatementCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 	this(string fileName, const(Scope)* sc, bool skipTests = false)
diff --git a/src/dscanner/analysis/ifelsesame.d b/src/dscanner/analysis/ifelsesame.d
index f87fe36..57f26f9 100644
--- a/src/dscanner/analysis/ifelsesame.d
+++ b/src/dscanner/analysis/ifelsesame.d
@@ -20,7 +20,7 @@ import dsymbol.scope_ : Scope;
  * $(LI == expressions where the left and right are the same)
  * )
  */
-class IfElseSameCheck : BaseAnalyzer
+final class IfElseSameCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/imports_sortedness.d b/src/dscanner/analysis/imports_sortedness.d
index bd84fd2..0d7cd3b 100644
--- a/src/dscanner/analysis/imports_sortedness.d
+++ b/src/dscanner/analysis/imports_sortedness.d
@@ -13,7 +13,7 @@ import std.stdio;
 /**
  * Checks the sortedness of module imports
  */
-class ImportSortednessCheck : BaseAnalyzer
+final class ImportSortednessCheck : BaseAnalyzer
 {
 	enum string KEY = "dscanner.style.imports_sortedness";
 	enum string MESSAGE = "The imports are not sorted in alphabetical order";
diff --git a/src/dscanner/analysis/incorrect_infinite_range.d b/src/dscanner/analysis/incorrect_infinite_range.d
index cca0025..499af70 100644
--- a/src/dscanner/analysis/incorrect_infinite_range.d
+++ b/src/dscanner/analysis/incorrect_infinite_range.d
@@ -13,7 +13,7 @@ import dparse.lexer;
 /**
  * Checks for incorrect infinite range definitions
  */
-class IncorrectInfiniteRangeCheck : BaseAnalyzer
+final class IncorrectInfiniteRangeCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/label_var_same_name_check.d b/src/dscanner/analysis/label_var_same_name_check.d
index 88347b4..1e1f298 100644
--- a/src/dscanner/analysis/label_var_same_name_check.d
+++ b/src/dscanner/analysis/label_var_same_name_check.d
@@ -13,7 +13,7 @@ import dscanner.analysis.helpers;
 /**
  * Checks for labels and variables that have the same name.
  */
-class LabelVarNameCheck : BaseAnalyzer
+final class LabelVarNameCheck : BaseAnalyzer
 {
 	this(string fileName, const(Scope)* sc, bool skipTests = false)
 	{
diff --git a/src/dscanner/analysis/lambda_return_check.d b/src/dscanner/analysis/lambda_return_check.d
index ab0a7d2..fed78bd 100644
--- a/src/dscanner/analysis/lambda_return_check.d
+++ b/src/dscanner/analysis/lambda_return_check.d
@@ -9,7 +9,7 @@ import dparse.ast;
 import dparse.lexer;
 import dscanner.analysis.base;
 
-class LambdaReturnCheck : BaseAnalyzer
+final class LambdaReturnCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/length_subtraction.d b/src/dscanner/analysis/length_subtraction.d
index e220373..4c7a0d1 100644
--- a/src/dscanner/analysis/length_subtraction.d
+++ b/src/dscanner/analysis/length_subtraction.d
@@ -16,7 +16,7 @@ import dsymbol.scope_;
 /**
  * Checks for subtraction from a .length property. This is usually a bug.
  */
-class LengthSubtractionCheck : BaseAnalyzer
+final class LengthSubtractionCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/line_length.d b/src/dscanner/analysis/line_length.d
index bab42a8..97d3f07 100644
--- a/src/dscanner/analysis/line_length.d
+++ b/src/dscanner/analysis/line_length.d
@@ -15,7 +15,7 @@ import std.typecons : tuple, Tuple;
 /**
  * Checks for lines longer than 120 characters
  */
-class LineLengthCheck : BaseAnalyzer
+final class LineLengthCheck : BaseAnalyzer
 {
 	///
 	this(string fileName, const(Token)[] tokens, bool skipTests = false)
diff --git a/src/dscanner/analysis/local_imports.d b/src/dscanner/analysis/local_imports.d
index cb08333..0da9840 100644
--- a/src/dscanner/analysis/local_imports.d
+++ b/src/dscanner/analysis/local_imports.d
@@ -16,7 +16,7 @@ import dsymbol.scope_;
  * Checks for local imports that import all symbols.
  * See_also: $(LINK https://issues.dlang.org/show_bug.cgi?id=10378)
  */
-class LocalImportCheck : BaseAnalyzer
+final class LocalImportCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/logic_precedence.d b/src/dscanner/analysis/logic_precedence.d
index 8eac0b7..7e474d3 100644
--- a/src/dscanner/analysis/logic_precedence.d
+++ b/src/dscanner/analysis/logic_precedence.d
@@ -19,7 +19,7 @@ import dsymbol.scope_;
  * if (a && (b || c)) // good
  * ---
  */
-class LogicPrecedenceCheck : BaseAnalyzer
+final class LogicPrecedenceCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/numbers.d b/src/dscanner/analysis/numbers.d
index c20986c..6e7b86b 100644
--- a/src/dscanner/analysis/numbers.d
+++ b/src/dscanner/analysis/numbers.d
@@ -16,7 +16,7 @@ import dsymbol.scope_ : Scope;
 /**
  * Checks for long and hard-to-read number literals
  */
-class NumberStyleCheck : BaseAnalyzer
+final class NumberStyleCheck : BaseAnalyzer
 {
 public:
 	alias visit = BaseAnalyzer.visit;
diff --git a/src/dscanner/analysis/objectconst.d b/src/dscanner/analysis/objectconst.d
index 50f0850..c20bc5c 100644
--- a/src/dscanner/analysis/objectconst.d
+++ b/src/dscanner/analysis/objectconst.d
@@ -17,7 +17,7 @@ import dsymbol.scope_ : Scope;
  * Checks that opEquals, opCmp, toHash, 'opCast', and toString are either const,
  * immutable, or inout.
  */
-class ObjectConstCheck : BaseAnalyzer
+final class ObjectConstCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/opequals_without_tohash.d b/src/dscanner/analysis/opequals_without_tohash.d
index 5575e32..a1b4e84 100644
--- a/src/dscanner/analysis/opequals_without_tohash.d
+++ b/src/dscanner/analysis/opequals_without_tohash.d
@@ -16,7 +16,7 @@ import dsymbol.scope_ : Scope;
  * Checks for when a class/struct has the method opEquals without toHash, or
  * toHash without opEquals.
  */
-class OpEqualsWithoutToHashCheck : BaseAnalyzer
+final class OpEqualsWithoutToHashCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/pokemon.d b/src/dscanner/analysis/pokemon.d
index 3bc5de3..ef594ae 100644
--- a/src/dscanner/analysis/pokemon.d
+++ b/src/dscanner/analysis/pokemon.d
@@ -23,7 +23,7 @@ import dsymbol.scope_ : Scope;
  * }
  * ---
  */
-class PokemonExceptionCheck : BaseAnalyzer
+final class PokemonExceptionCheck : BaseAnalyzer
 {
 	enum MESSAGE = "Catching Error or Throwable is almost always a bad idea.";
 	enum string KEY = "dscanner.suspicious.catch_em_all";
diff --git a/src/dscanner/analysis/properly_documented_public_functions.d b/src/dscanner/analysis/properly_documented_public_functions.d
index d24909d..8b570b2 100644
--- a/src/dscanner/analysis/properly_documented_public_functions.d
+++ b/src/dscanner/analysis/properly_documented_public_functions.d
@@ -21,7 +21,7 @@ import std.stdio;
 		- Ddoc params entries without a parameter trigger warnings as well
 	- RETURNS: (except if it's void, only functions)
  */
-class ProperlyDocumentedPublicFunctions : BaseAnalyzer
+final class ProperlyDocumentedPublicFunctions : BaseAnalyzer
 {
 	enum string MISSING_PARAMS_KEY = "dscanner.style.doc_missing_params";
 	enum string MISSING_PARAMS_MESSAGE = "Parameter %s isn't documented in the `Params` section.";
diff --git a/src/dscanner/analysis/range.d b/src/dscanner/analysis/range.d
index 20fc058..bfc5581 100644
--- a/src/dscanner/analysis/range.d
+++ b/src/dscanner/analysis/range.d
@@ -16,7 +16,7 @@ import dsymbol.scope_ : Scope;
  * Checks for .. expressions where the left side is larger than the right. This
  * is almost always a mistake.
  */
-class BackwardsRangeCheck : BaseAnalyzer
+final class BackwardsRangeCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/redundant_attributes.d b/src/dscanner/analysis/redundant_attributes.d
index 7aca111..d7bfab2 100644
--- a/src/dscanner/analysis/redundant_attributes.d
+++ b/src/dscanner/analysis/redundant_attributes.d
@@ -17,7 +17,7 @@ import std.range : empty, front, walkLength;
 /**
  * Checks for redundant attributes. At the moment only visibility attributes.
  */
-class RedundantAttributesCheck : BaseAnalyzer
+final class RedundantAttributesCheck : BaseAnalyzer
 {
 	this(string fileName, const(Scope)* sc, bool skipTests = false)
 	{
diff --git a/src/dscanner/analysis/redundant_parens.d b/src/dscanner/analysis/redundant_parens.d
index c4af077..b2bf1bd 100644
--- a/src/dscanner/analysis/redundant_parens.d
+++ b/src/dscanner/analysis/redundant_parens.d
@@ -13,7 +13,7 @@ import dsymbol.scope_ : Scope;
 /**
  * Checks for redundant parenthesis
  */
-class RedundantParenCheck : BaseAnalyzer
+final class RedundantParenCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/redundant_storage_class.d b/src/dscanner/analysis/redundant_storage_class.d
index f9bb2be..af90b9c 100644
--- a/src/dscanner/analysis/redundant_storage_class.d
+++ b/src/dscanner/analysis/redundant_storage_class.d
@@ -16,7 +16,7 @@ import dsymbol.scope_ : Scope;
 /**
  * Checks for redundant storage classes such immutable and __gshared, static and __gshared
  */
-class RedundantStorageClassCheck : BaseAnalyzer
+final class RedundantStorageClassCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 	enum string REDUNDANT_VARIABLE_ATTRIBUTES = "Variable declaration for `%s` has redundant attributes (%-(`%s`%|, %)).";
diff --git a/src/dscanner/analysis/static_if_else.d b/src/dscanner/analysis/static_if_else.d
index f23199d..df7db9d 100644
--- a/src/dscanner/analysis/static_if_else.d
+++ b/src/dscanner/analysis/static_if_else.d
@@ -22,7 +22,7 @@ import dscanner.utils : safeAccess;
  * 
  * However, it's more likely that this is a mistake.
  */
-class StaticIfElse : BaseAnalyzer
+final class StaticIfElse : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/stats_collector.d b/src/dscanner/analysis/stats_collector.d
index 5056849..a2fdee4 100644
--- a/src/dscanner/analysis/stats_collector.d
+++ b/src/dscanner/analysis/stats_collector.d
@@ -9,7 +9,7 @@ import dparse.ast;
 import dparse.lexer;
 import dscanner.analysis.base;
 
-class StatsCollector : BaseAnalyzer
+final class StatsCollector : BaseAnalyzer
 {
 	alias visit = ASTVisitor.visit;
 
diff --git a/src/dscanner/analysis/trust_too_much.d b/src/dscanner/analysis/trust_too_much.d
index 7e469dd..8d7d826 100644
--- a/src/dscanner/analysis/trust_too_much.d
+++ b/src/dscanner/analysis/trust_too_much.d
@@ -14,7 +14,7 @@ import dsymbol.scope_;
 /**
  * Checks that `@trusted` is only applied to a a single function
  */
-class TrustTooMuchCheck : BaseAnalyzer
+final class TrustTooMuchCheck : BaseAnalyzer
 {
 private:
 
diff --git a/src/dscanner/analysis/undocumented.d b/src/dscanner/analysis/undocumented.d
index 1438435..01f5584 100644
--- a/src/dscanner/analysis/undocumented.d
+++ b/src/dscanner/analysis/undocumented.d
@@ -17,7 +17,7 @@ import std.stdio;
  * Checks for undocumented public declarations. Ignores some operator overloads,
  * main functions, and functions whose name starts with "get" or "set".
  */
-class UndocumentedDeclarationCheck : BaseAnalyzer
+final class UndocumentedDeclarationCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/unmodified.d b/src/dscanner/analysis/unmodified.d
index d8b3406..579a057 100644
--- a/src/dscanner/analysis/unmodified.d
+++ b/src/dscanner/analysis/unmodified.d
@@ -14,7 +14,7 @@ import dparse.lexer;
 /**
  * Checks for variables that could have been declared const or immutable
  */
-class UnmodifiedFinder : BaseAnalyzer
+final class UnmodifiedFinder : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/unused.d b/src/dscanner/analysis/unused.d
index 319639a..19c7a0f 100644
--- a/src/dscanner/analysis/unused.d
+++ b/src/dscanner/analysis/unused.d
@@ -16,7 +16,7 @@ import std.algorithm : all;
 /**
  * Checks for unused variables.
  */
-class UnusedVariableCheck : BaseAnalyzer
+final class UnusedVariableCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/useless_assert.d b/src/dscanner/analysis/useless_assert.d
index 8f173ea..af9d7e6 100644
--- a/src/dscanner/analysis/useless_assert.d
+++ b/src/dscanner/analysis/useless_assert.d
@@ -23,7 +23,7 @@ auto filterChars(string chars, S)(S str)
 /**
  * Checks for asserts that always succeed
  */
-class UselessAssertCheck : BaseAnalyzer
+final class UselessAssertCheck : BaseAnalyzer
 {
 	alias visit = BaseAnalyzer.visit;
 
diff --git a/src/dscanner/analysis/vcall_in_ctor.d b/src/dscanner/analysis/vcall_in_ctor.d
index efd1a44..85bfa93 100644
--- a/src/dscanner/analysis/vcall_in_ctor.d
+++ b/src/dscanner/analysis/vcall_in_ctor.d
@@ -19,7 +19,7 @@ import std.range: retro;
  * When not used carefully, virtual calls from constructors can lead to a call
  * in a derived instance that's not yet constructed.
  */
-class VcallCtorChecker : BaseAnalyzer
+final class VcallCtorChecker : BaseAnalyzer
 {
     alias visit = BaseAnalyzer.visit;