diff --git a/lib/config/config-validator.js b/lib/config/config-validator.js
index f449bb1e..d03f06f4 100644
--- a/lib/config/config-validator.js
+++ b/lib/config/config-validator.js
@@ -1,3 +1,5 @@
+const chalk = require('chalk')
+const _ = require('lodash')
 const ajv = require('../common/ajv')
 const configSchema = require('./config-schema')
 
@@ -38,12 +40,32 @@ const formatErrors = errors =>
     .map(message => `\t- ${message}.\n`)
     .join('')
 
+const deprecatedDisableValue = _.once(() => {
+  console.warn(
+    chalk.yellow(
+      '[Solhint] Warning: Disabling rules with `false` or `0` is deprecated. Please use `"off"` instead.'
+    )
+  )
+})
+
 const validate = config => {
   validateSchema = validateSchema || ajv.compile(configSchema)
 
   if (!validateSchema(config)) {
     throw new Error(`Solhint configuration is invalid:\n${formatErrors(validateSchema.errors)}`)
   }
+
+  // show deprecated warning for rules that are configured with `false` or `0`
+  Object.keys(config.rules || {}).forEach(key => {
+    let severity = config.rules[key]
+    if (Array.isArray(severity)) {
+      severity = severity[0]
+    }
+
+    if (severity === false || severity === 0) {
+      deprecatedDisableValue()
+    }
+  })
 }
 
 module.exports = {
diff --git a/lib/rules/index.js b/lib/rules/index.js
index 19322fae..2d2acdc4 100644
--- a/lib/rules/index.js
+++ b/lib/rules/index.js
@@ -1,3 +1,4 @@
+const chalk = require('chalk')
 const _ = require('lodash')
 const security = require('./security/index')
 const naming = require('./naming/index')
@@ -22,7 +23,16 @@ module.exports = function checkers(reporter, configVals, inputSrc, fileName) {
 
   const allRules = [...coreRules(meta), ...pluginsRules(plugins, meta)]
 
-  return allRules.filter(coreRule => ruleEnabled(coreRule, rules))
+  const enabledRules = allRules.filter(coreRule => ruleEnabled(coreRule, rules))
+
+  // show warnings for deprecated rules
+  for (const rule of enabledRules) {
+    if (rule.meta && rule.meta.deprecated) {
+      console.warn(chalk.yellow(`[solhint] Warning: rule '${rule.ruleId}' is deprecated.`))
+    }
+  }
+
+  return enabledRules
 }
 
 function coreRules(meta) {
diff --git a/lib/rules/security/compiler-fixed.js b/lib/rules/security/compiler-fixed.js
index c14cf95d..3130840f 100644
--- a/lib/rules/security/compiler-fixed.js
+++ b/lib/rules/security/compiler-fixed.js
@@ -13,6 +13,8 @@ const meta = {
   recommended: true,
   defaultSetup: 'warn',
 
+  deprecated: true,
+
   schema: []
 }
 
diff --git a/lib/rules/security/compiler-gt-0_4.js b/lib/rules/security/compiler-gt-0_4.js
index 90db27ef..f4b7dff7 100644
--- a/lib/rules/security/compiler-gt-0_4.js
+++ b/lib/rules/security/compiler-gt-0_4.js
@@ -13,6 +13,8 @@ const meta = {
   recommended: true,
   defaultSetup: 'warn',
 
+  deprecated: true,
+
   schema: []
 }
 
diff --git a/package-lock.json b/package-lock.json
index c4e92d8b..f2b87993 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -358,9 +358,9 @@
       "dev": true
     },
     "chalk": {
-      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
-      "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+      "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
       "requires": {
         "ansi-styles": "^3.2.1",
         "escape-string-regexp": "^1.0.5",
@@ -1111,8 +1111,7 @@
     "has-flag": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
-      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
-      "dev": true
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
     },
     "has-symbols": {
       "version": "1.0.0",
@@ -3272,13 +3271,6 @@
       "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
       "requires": {
         "has-flag": "^3.0.0"
-      },
-      "dependencies": {
-        "has-flag": {
-          "version": "3.0.0",
-          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
-          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
-        }
       }
     },
     "table": {
diff --git a/package.json b/package.json
index 441f5e52..536ca873 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,7 @@
   "dependencies": {
     "ajv": "^6.6.1",
     "antlr4": "4.7.1",
+    "chalk": "^2.4.2",
     "commander": "2.18.0",
     "cosmiconfig": "^5.0.7",
     "eslint": "^5.6.0",
diff --git a/test/common/config-validator.js b/test/common/config-validator.js
index 91ea451a..e20e385e 100644
--- a/test/common/config-validator.js
+++ b/test/common/config-validator.js
@@ -38,4 +38,10 @@ describe('Config validator', () => {
     }
     assert.throws(() => validate(config), Error)
   })
+
+  it('should work with an empty config', () => {
+    const config = {}
+
+    validate(config) // should not throw
+  })
 })