diff --git a/slides/package-lock.json b/slides/package-lock.json
index 3a17b7be..86e645a6 100644
--- a/slides/package-lock.json
+++ b/slides/package-lock.json
@@ -2785,7 +2785,8 @@
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       "resolved": "https://registry.npmjs.org/commander/-/commander-2.17.1.tgz",
-      "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg=="
+      "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==",
+      "dev": true
     },
     "commondir": {
       "version": "1.0.1",
@@ -4578,24 +4579,6 @@
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       "dev": true
     },
-    "handlebars": {
-      "version": "4.5.3",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.5.3.tgz",
-      "integrity": "sha512-3yPecJoJHK/4c6aZhSvxOyG4vJKDshV36VHp0iVCDVh7o9w2vwi3NSnL2MMPj3YdduqaBcu7cGbggJQM0br9xA==",
-      "requires": {
-        "neo-async": "^2.6.0",
-        "optimist": "^0.6.1",
-        "source-map": "^0.6.1",
-        "uglify-js": "^3.1.4"
-      },
-      "dependencies": {
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-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
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       "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
@@ -4676,12 +4659,9 @@
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-      "version": "9.17.1",
-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.17.1.tgz",
-      "integrity": "sha512-TA2/doAur5Ol8+iM3Ov7qy3jYcr/QiJ2eDTdRF4dfbjG7AaaB99J5G+zSl11ljbl6cIcahgPY6SKb3sC3EJ0fw==",
-      "requires": {
-        "handlebars": "^4.5.3"
-      }
+      "version": "9.18.0",
+      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.18.0.tgz",
+      "integrity": "sha512-A97kI1KAUzKoAiEoaGcf2O9YPS8nbDTCRFokaaeBhnqjQTvbAuAJrQMm21zw8s8xzaMtCQBtgbyGXLGxdxQyqQ=="
     },
     "hmac-drbg": {
       "version": "1.0.1",
@@ -5527,7 +5507,8 @@
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       "version": "2.6.1",
       "resolved": "https://registry.npmjs.org/neo-async/-/neo-async-2.6.1.tgz",
-      "integrity": "sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw=="
+      "integrity": "sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw==",
+      "dev": true
     },
     "nice-try": {
       "version": "1.0.5",
@@ -5768,22 +5749,6 @@
         "wrappy": "1"
       }
     },
-    "optimist": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "requires": {
-        "minimist": "~0.0.1",
-        "wordwrap": "~0.0.2"
-      },
-      "dependencies": {
-        "minimist": {
-          "version": "0.0.10",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
-          "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8="
-        }
-      }
-    },
     "os-browserify": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/os-browserify/-/os-browserify-0.3.0.tgz",
@@ -7377,6 +7342,7 @@
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       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.4.9.tgz",
       "integrity": "sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==",
+      "dev": true,
       "requires": {
         "commander": "~2.17.1",
         "source-map": "~0.6.1"
@@ -7385,7 +7351,8 @@
         "source-map": {
           "version": "0.6.1",
           "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
         }
       }
     },
@@ -7904,7 +7871,8 @@
     "wordwrap": {
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
-      "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8="
+      "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=",
+      "dev": true
     },
     "worker-farm": {
       "version": "1.7.0",
diff --git a/slides/package.json b/slides/package.json
index 88f563f0..212bdcda 100644
--- a/slides/package.json
+++ b/slides/package.json
@@ -3,7 +3,7 @@
   "author": "Artem Malyshev",
   "private": true,
   "dependencies": {
-    "highlight.js": "^9.17.1",
+    "highlight.js": "^9.18.0",
     "reveal.js": "^3.8.0"
   },
   "devDependencies": {