diff --git a/packages/eui-theme-borealis/changelogs/upcoming/8764.md b/packages/eui-theme-borealis/changelogs/upcoming/8764.md
new file mode 100644
index 00000000000..bdba00f3ca9
--- /dev/null
+++ b/packages/eui-theme-borealis/changelogs/upcoming/8764.md
@@ -0,0 +1,4 @@
+**Bug fixes**
+
+- Fixed missing source map warnings emitted by some bundlers by excluding source maps from being published
+  - To align with `@elastic/eui` and many other popular packages, we made a call to not ship source maps anymore
diff --git a/packages/eui-theme-borealis/package.json b/packages/eui-theme-borealis/package.json
index 152a1cfa870..e0abed00fdd 100644
--- a/packages/eui-theme-borealis/package.json
+++ b/packages/eui-theme-borealis/package.json
@@ -8,7 +8,7 @@
     "build:clean": "rimraf lib/",
     "build": "yarn build:clean && yarn build:compile && yarn build:compile:cjs && yarn build:types && yarn copy-files",
     "build:compile": "tsc --project ./tsconfig.json",
-    "build:compile:cjs": "NODE_ENV=production NO_COREJS_POLYFILL=true babel src --out-dir=lib/cjs --extensions .js,.ts,.tsx --source-maps=true",
+    "build:compile:cjs": "NODE_ENV=production NO_COREJS_POLYFILL=true babel src --out-dir=lib/cjs --extensions .js,.ts,.tsx",
     "build:types": "NODE_ENV=production tsc --project tsconfig.types.json",
     "build-pack": "yarn build && npm pack",
     "copy-files": "node ./scripts/copy-json-files.js",
diff --git a/packages/eui-theme-borealis/tsconfig.cjs.json b/packages/eui-theme-borealis/tsconfig.cjs.json
index 6becea42efa..8dbb95ee273 100644
--- a/packages/eui-theme-borealis/tsconfig.cjs.json
+++ b/packages/eui-theme-borealis/tsconfig.cjs.json
@@ -11,7 +11,6 @@
     ],
     "moduleResolution": "Node",
     "declaration": true,
-    "sourceMap": true,
     "noEmitHelpers": true,
     "incremental": true,
     "esModuleInterop": true,
@@ -26,4 +25,4 @@
   "exclude": [
     "node_modules"
   ],
-}
\ No newline at end of file
+}
diff --git a/packages/eui-theme-borealis/tsconfig.json b/packages/eui-theme-borealis/tsconfig.json
index 31450bf12d6..e91e8e9c231 100644
--- a/packages/eui-theme-borealis/tsconfig.json
+++ b/packages/eui-theme-borealis/tsconfig.json
@@ -11,7 +11,6 @@
     ],
     "moduleResolution": "Node",
     "declaration": true,
-    "sourceMap": true,
     "noEmitHelpers": true,
     "incremental": true,
     "esModuleInterop": true,
@@ -25,4 +24,4 @@
   "exclude": [
     "node_modules"
   ],
-}
\ No newline at end of file
+}
diff --git a/packages/eui-theme-borealis/tsconfig.types.json b/packages/eui-theme-borealis/tsconfig.types.json
index 54e2031daae..f47144cc9ae 100644
--- a/packages/eui-theme-borealis/tsconfig.types.json
+++ b/packages/eui-theme-borealis/tsconfig.types.json
@@ -3,11 +3,10 @@
     "compilerOptions": {
         "outDir": "lib/cjs",
         "declaration": true,
-        "declarationMap": true,
         "isolatedModules": false,
         "noEmit": false,
         "allowJs": false,
         "emitDeclarationOnly": true
     },
     "exclude": ["node_modules", "**/*.test.ts"]
-}
\ No newline at end of file
+}
diff --git a/packages/eui-theme-common/changelogs/upcoming/8764.md b/packages/eui-theme-common/changelogs/upcoming/8764.md
new file mode 100644
index 00000000000..bdba00f3ca9
--- /dev/null
+++ b/packages/eui-theme-common/changelogs/upcoming/8764.md
@@ -0,0 +1,4 @@
+**Bug fixes**
+
+- Fixed missing source map warnings emitted by some bundlers by excluding source maps from being published
+  - To align with `@elastic/eui` and many other popular packages, we made a call to not ship source maps anymore
diff --git a/packages/eui-theme-common/package.json b/packages/eui-theme-common/package.json
index 8668bd020d8..1653b935ed4 100644
--- a/packages/eui-theme-common/package.json
+++ b/packages/eui-theme-common/package.json
@@ -7,7 +7,7 @@
     "build:clean": "rimraf lib/",
     "build": "yarn build:clean && yarn build:compile && yarn build:compile:cjs && yarn build:types",
     "build:compile": "tsc --project ./tsconfig.json",
-    "build:compile:cjs": "NODE_ENV=production NO_COREJS_POLYFILL=true babel src --out-dir=lib/cjs --extensions .js,.ts,.tsx --source-maps=true",
+    "build:compile:cjs": "NODE_ENV=production NO_COREJS_POLYFILL=true babel src --out-dir=lib/cjs --extensions .js,.ts,.tsx",
     "build:types": "NODE_ENV=production tsc --project tsconfig.types.json",
     "build-pack": "yarn build && npm pack",
     "lint": "yarn tsc --noEmit && yarn lint-es && yarn lint-sass",
diff --git a/packages/eui-theme-common/tsconfig.cjs.json b/packages/eui-theme-common/tsconfig.cjs.json
index 6becea42efa..8dbb95ee273 100644
--- a/packages/eui-theme-common/tsconfig.cjs.json
+++ b/packages/eui-theme-common/tsconfig.cjs.json
@@ -11,7 +11,6 @@
     ],
     "moduleResolution": "Node",
     "declaration": true,
-    "sourceMap": true,
     "noEmitHelpers": true,
     "incremental": true,
     "esModuleInterop": true,
@@ -26,4 +25,4 @@
   "exclude": [
     "node_modules"
   ],
-}
\ No newline at end of file
+}
diff --git a/packages/eui-theme-common/tsconfig.json b/packages/eui-theme-common/tsconfig.json
index 31450bf12d6..e91e8e9c231 100644
--- a/packages/eui-theme-common/tsconfig.json
+++ b/packages/eui-theme-common/tsconfig.json
@@ -11,7 +11,6 @@
     ],
     "moduleResolution": "Node",
     "declaration": true,
-    "sourceMap": true,
     "noEmitHelpers": true,
     "incremental": true,
     "esModuleInterop": true,
@@ -25,4 +24,4 @@
   "exclude": [
     "node_modules"
   ],
-}
\ No newline at end of file
+}
diff --git a/packages/eui-theme-common/tsconfig.types.json b/packages/eui-theme-common/tsconfig.types.json
index 54e2031daae..f47144cc9ae 100644
--- a/packages/eui-theme-common/tsconfig.types.json
+++ b/packages/eui-theme-common/tsconfig.types.json
@@ -3,11 +3,10 @@
     "compilerOptions": {
         "outDir": "lib/cjs",
         "declaration": true,
-        "declarationMap": true,
         "isolatedModules": false,
         "noEmit": false,
         "allowJs": false,
         "emitDeclarationOnly": true
     },
     "exclude": ["node_modules", "**/*.test.ts"]
-}
\ No newline at end of file
+}