diff --git a/.eslintrc b/.eslintrc
index d7782481d..ae3143d3d 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -71,6 +71,7 @@
     "no-inner-declarations": ["error", "functions"],
     "no-invalid-regexp": "error",
     "no-irregular-whitespace": "error",
+    "no-loss-of-precision": "error",
     "no-obj-calls": "error",
     "no-promise-executor-return": "error",
     "no-regex-spaces": "error",
diff --git a/src/core/colorspace.js b/src/core/colorspace.js
index b07be2a8f..232ceb60a 100644
--- a/src/core/colorspace.js
+++ b/src/core/colorspace.js
@@ -947,7 +947,7 @@ const CalGrayCS = (function CalGrayCSClosure() {
     const L = cs.YW * AG;
     // http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html, Ch 4.
     // Convert values to rgb range [0, 255].
-    const val = Math.max(295.8 * L ** 0.333333333333333333 - 40.8, 0);
+    const val = Math.max(295.8 * L ** 0.3333333333333333 - 40.8, 0);
     dest[destOffset] = val;
     dest[destOffset + 1] = val;
     dest[destOffset + 2] = val;
diff --git a/src/core/jpg.js b/src/core/jpg.js
index 5084181ca..6b53131cc 100644
--- a/src/core/jpg.js
+++ b/src/core/jpg.js
@@ -1349,7 +1349,7 @@ class JpegImage {
           (0.00006834815998235662 * y +
             0.00015168452363460973 * k -
             0.09751927774728933) -
-        k * (0.00031891311758832814 * k + 0.7364883807733168);
+        k * (0.0003189131175883281 * k + 0.7364883807733168);
 
       data[offset++] =
         255 +