diff --git a/package.json b/package.json
index f8b3579..68e965a 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "poi": "12.4.3",
     "rollup-plugin-typescript2": "0.20.1",
     "rollup-plugin-vue": "4.3.2",
-    "sass-loader": "7.1.0",
+    "sass-loader": "12.2.0",
     "typescript": "3.4.3",
     "vue-template-compiler": "2.5.22"
   },
diff --git a/yarn.lock b/yarn.lock
index 5215cb5..8102130 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4660,6 +4660,11 @@ kind-of@^6.0.0, kind-of@^6.0.1, kind-of@^6.0.2:
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.2.tgz#01146b36a6218e64e58f3a8d66de5d7fc6f6d051"
   integrity sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==
 
+klona@^2.0.4:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/klona/-/klona-2.0.4.tgz#7bb1e3affb0cb8624547ef7e8f6708ea2e39dfc0"
+  integrity sha512-ZRbnvdg/NxqzC7L9Uyqzf4psi1OM4Cuc+sJAkQPjO6XkQIJTNbfK2Rsmbw8fx1p2mkZdp2FZYo2+LwXYY/uwIA==
+
 launch-editor-middleware@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/launch-editor-middleware/-/launch-editor-middleware-2.2.1.tgz#e14b07e6c7154b0a4b86a0fd345784e45804c157"
@@ -4730,7 +4735,7 @@ loader-utils@^0.2.16:
     json5 "^0.5.0"
     object-assign "^4.0.1"
 
-loader-utils@^1.0.1, loader-utils@^1.0.2, loader-utils@^1.1.0:
+loader-utils@^1.0.2, loader-utils@^1.1.0:
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-1.2.3.tgz#1ff5dc6911c9f0a062531a4c04b609406108c2c7"
   integrity sha512-fkpz8ejdnEMG3s37wGL07iSBDg99O9D5yflE9RGNH3hRdx9SOwYfnGYdZOUIZitN8E+E2vkq3MUMYMvPYl5ZZA==
@@ -4790,11 +4795,6 @@ lodash.mergewith@^4.6.0:
   resolved "https://registry.yarnpkg.com/lodash.mergewith/-/lodash.mergewith-4.6.1.tgz#639057e726c3afbdb3e7d42741caa8d6e4335927"
   integrity sha512-eWw5r+PYICtEBgrBE5hhlT6aAa75f411bgDz/ZL2KZqYV03USvucsxcHUIlGTDTECs1eunpI7HOV7U+WLDvNdQ==
 
-lodash.tail@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/lodash.tail/-/lodash.tail-4.1.1.tgz#d2333a36d9e7717c8ad2f7cacafec7c32b444664"
-  integrity sha1-0jM6NtnncXyK0vfKyv7HwytERmQ=
-
 lodash.uniq@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
@@ -5260,6 +5260,11 @@ neo-async@^2.5.0:
   resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.0.tgz#b9d15e4d71c6762908654b5183ed38b753340835"
   integrity sha512-MFh0d/Wa7vkKO3Y3LlacqAEeHK0mckVqzDieUKTT+KGxi+zIpeVsFxymkIiRpbpDziHc290Xr9A1O4Om7otoRA==
 
+neo-async@^2.6.2:
+  version "2.6.2"
+  resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.2.tgz#b4aafb93e3aeb2d8174ca53cf163ab7d7308305f"
+  integrity sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==
+
 nice-try@^1.0.4:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
@@ -7377,17 +7382,13 @@ sass-graph@^2.2.4:
     scss-tokenizer "^0.2.3"
     yargs "^7.0.0"
 
-sass-loader@7.1.0:
-  version "7.1.0"
-  resolved "https://registry.yarnpkg.com/sass-loader/-/sass-loader-7.1.0.tgz#16fd5138cb8b424bf8a759528a1972d72aad069d"
-  integrity sha512-+G+BKGglmZM2GUSfT9TLuEp6tzehHPjAMoRRItOojWIqIGPloVCMhNIQuG639eJ+y033PaGTSjLaTHts8Kw79w==
+sass-loader@12.2.0:
+  version "12.2.0"
+  resolved "https://registry.yarnpkg.com/sass-loader/-/sass-loader-12.2.0.tgz#b370010fb0ababae2ef9c6c89e05d6c6debc6042"
+  integrity sha512-qducnp5vSV+8A8MZxuH6zV0MUg4MOVISScl2wDTCAn/2WJX+9Auxh92O/rnkdR2bvi5QxZBafnzkzRrWGZvm7w==
   dependencies:
-    clone-deep "^2.0.1"
-    loader-utils "^1.0.1"
-    lodash.tail "^4.1.1"
-    neo-async "^2.5.0"
-    pify "^3.0.0"
-    semver "^5.5.0"
+    klona "^2.0.4"
+    neo-async "^2.6.2"
 
 sax@^1.2.4, sax@~1.2.1, sax@~1.2.4:
   version "1.2.4"