diff --git a/package.json b/package.json
index 1fd635a9..dd67a68f 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "discrub-ext",
   "private": true,
-  "version": "1.12.2",
+  "version": "1.12.3",
   "type": "module",
   "scripts": {
     "clean_prod_manifest": "cat <<< $(jq 'del(.use_dynamic_url, .web_accessible_resources[].use_dynamic_url)' dist/manifest.json) > dist/manifest.json",
@@ -19,6 +19,7 @@
     "@reduxjs/toolkit": "^2.0.1",
     "@transcend-io/conflux": "^4.1.0",
     "@types/chrome": "^0.0.256",
+    "@types/firefox-webext-browser": "^120.0.4",
     "bytes": "^3.1.2",
     "copy-to-clipboard": "^3.3.3",
     "date-fns": "^3.1.0",
diff --git a/public/manifest.json b/public/manifest.json
index 8706f615..674bff8d 100644
--- a/public/manifest.json
+++ b/public/manifest.json
@@ -1,7 +1,7 @@
 {
   "short_name": "Discrub",
   "name": "Discrub",
-  "version": "1.12.2",
+  "version": "1.12.3",
   "description": "A data manipulation and export tool for Discord.",
   "manifest_version": 3,
   "permissions": ["storage"],
diff --git a/src/changelog.json b/src/changelog.json
index b47ef223..a03a28b9 100644
--- a/src/changelog.json
+++ b/src/changelog.json
@@ -1,4 +1,8 @@
 [
+  {
+    "version": "1.12.3",
+    "changes": ["Auxillary changes for Firefox."]
+  },
   {
     "version": "1.12.2",
     "changes": [
diff --git a/src/components/attachment-mock.tsx b/src/components/attachment-mock.tsx
index 343abdf5..9972387d 100644
--- a/src/components/attachment-mock.tsx
+++ b/src/components/attachment-mock.tsx
@@ -137,11 +137,7 @@ const AttachmentMock = ({ attachment }: AttachmentMockProps) => {
           controls
           playsInline
           autoPlay={false}
-          poster={
-            mediaMap[attachment.proxy_url]
-              ? undefined
-              : "resources/media/discrub.png"
-          }
+          poster="../discrub_media/discrub.png" // Required to prevent 'react-to-print' from hanging indefinitely in some cases.
         />
       )}
       {isPreviewingAudio && isAudio && (
diff --git a/src/components/embed-mock.tsx b/src/components/embed-mock.tsx
index d4e81cec..95162569 100644
--- a/src/components/embed-mock.tsx
+++ b/src/components/embed-mock.tsx
@@ -50,7 +50,7 @@ const EmbedMock = ({ embed, index }: EmbedMockProps) => {
           controls
           playsInline
           autoPlay={false}
-          poster={embed.thumbnail?.proxy_url || "resources/media/discrub.png"}
+          poster="../discrub_media/discrub.png" // Required to prevent 'react-to-print' from hanging indefinitely in some cases.
         />
       )}
       {isPreviewingVideos &&
diff --git a/src/containers/discrub-dialog/discrub-dialog.tsx b/src/containers/discrub-dialog/discrub-dialog.tsx
index 840cdd63..0e9982e2 100644
--- a/src/containers/discrub-dialog/discrub-dialog.tsx
+++ b/src/containers/discrub-dialog/discrub-dialog.tsx
@@ -89,7 +89,7 @@ function DiscrubDialog() {
           spacing={1}
         >
           <Typography color="primary.main" variant="body2">
-            1.12.2
+            1.12.3
           </Typography>
         </Stack>
       </Box>