diff --git a/app/src/main/java/eu/kanade/domain/source/interactor/CreateSourceRepo.kt b/app/src/main/java/eu/kanade/domain/source/interactor/CreateSourceRepo.kt
index e22d8980f..f55532e12 100644
--- a/app/src/main/java/eu/kanade/domain/source/interactor/CreateSourceRepo.kt
+++ b/app/src/main/java/eu/kanade/domain/source/interactor/CreateSourceRepo.kt
@@ -11,7 +11,7 @@ class CreateSourceRepo(private val preferences: SourcePreferences) {
             return Result.InvalidUrl
         }
 
-        preferences.extensionRepos() += name.substringBeforeLast("/index.min.json")
+        preferences.extensionRepos() += name.removeSuffix("/index.min.json")
 
         return Result.Success
     }
diff --git a/app/src/main/java/eu/kanade/presentation/browse/ExtensionDetailsScreen.kt b/app/src/main/java/eu/kanade/presentation/browse/ExtensionDetailsScreen.kt
index 3c4b8e2ca..213fe9dd2 100644
--- a/app/src/main/java/eu/kanade/presentation/browse/ExtensionDetailsScreen.kt
+++ b/app/src/main/java/eu/kanade/presentation/browse/ExtensionDetailsScreen.kt
@@ -53,6 +53,7 @@ import eu.kanade.tachiyomi.extension.model.Extension
 import eu.kanade.tachiyomi.source.ConfigurableSource
 import eu.kanade.tachiyomi.ui.browse.extension.details.ExtensionDetailsScreenModel
 import eu.kanade.tachiyomi.util.system.LocaleHelper
+import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
 import tachiyomi.i18n.MR
 import tachiyomi.presentation.core.components.ScrollbarLazyColumn
@@ -138,7 +139,7 @@ fun ExtensionDetailsScreen(
 private fun ExtensionDetails(
     contentPadding: PaddingValues,
     extension: Extension.Installed,
-    sources: List<ExtensionSourceItem>,
+    sources: ImmutableList<ExtensionSourceItem>,
     onClickSourcePreferences: (sourceId: Long) -> Unit,
     onClickUninstall: () -> Unit,
     onClickSource: (sourceId: Long) -> Unit,
@@ -150,18 +151,24 @@ private fun ExtensionDetails(
         contentPadding = contentPadding,
     ) {
         when {
-            extension.isRepoSource ->
+            extension.isFromExternalRepo ->
                 item {
                     val uriHandler = LocalUriHandler.current
+                    val url = remember(extension) {
+                        val regex = """https://raw.githubusercontent.com/(.+?)/(.+?)/.+""".toRegex()
+                        regex.find(extension.repoUrl.orEmpty())
+                            ?.let {
+                                val (user, repo) = it.destructured
+                                "https://github.com/$user/$repo"
+                            }
+                            ?: extension.repoUrl
+                    }
+
                     WarningBanner(
                         MR.strings.repo_extension_message,
                         modifier = Modifier.clickable {
-                            extension.repoUrl ?: return@clickable
-                            uriHandler.openUri(
-                                extension.repoUrl
-                                    .replace("https://raw.githubusercontent.com", "https://github.com")
-                                    .removeSuffix("/repo/"),
-                            )
+                            url ?: return@clickable
+                            uriHandler.openUri(url)
                         },
                     )
                 }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/extension/ExtensionManager.kt b/app/src/main/java/eu/kanade/tachiyomi/extension/ExtensionManager.kt
index 942e8f4a1..156d881c8 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/extension/ExtensionManager.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/extension/ExtensionManager.kt
@@ -185,7 +185,17 @@ class ExtensionManager(
                 val hasUpdate = installedExt.updateExists(availableExt)
 
                 if (installedExt.hasUpdate != hasUpdate) {
-                    mutInstalledExtensions[index] = installedExt.copy(hasUpdate = hasUpdate)
+                    mutInstalledExtensions[index] = installedExt.copy(
+                        hasUpdate = hasUpdate,
+                        isFromExternalRepo = availableExt.isFromExternalRepo,
+                        repoUrl = availableExt.repoUrl,
+                    )
+                    changed = true
+                } else if (availableExt.isFromExternalRepo) {
+                    mutInstalledExtensions[index] = installedExt.copy(
+                        isFromExternalRepo = true,
+                        repoUrl = availableExt.repoUrl,
+                    )
                     changed = true
                 }
             }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionApi.kt b/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionApi.kt
index e885652b3..d0d493a97 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionApi.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/extension/api/ExtensionApi.kt
@@ -133,7 +133,7 @@ internal class ExtensionApi {
                     apkName = it.apk,
                     iconUrl = "$repoUrl/icon/${it.pkg}.png",
                     repoUrl = repoUrl,
-                    isRepoSource = isRepoSource,
+                    isFromExternalRepo = isRepoSource,
                 )
             }
     }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/extension/model/Extension.kt b/app/src/main/java/eu/kanade/tachiyomi/extension/model/Extension.kt
index 4dbf09a26..4982ef6e3 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/extension/model/Extension.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/extension/model/Extension.kt
@@ -30,7 +30,7 @@ sealed class Extension {
         val isUnofficial: Boolean = false,
         val isShared: Boolean,
         val repoUrl: String? = null,
-        val isRepoSource: Boolean = false,
+        val isFromExternalRepo: Boolean = false,
     ) : Extension()
 
     data class Available(
@@ -45,7 +45,7 @@ sealed class Extension {
         val apkName: String,
         val iconUrl: String,
         val repoUrl: String,
-        val isRepoSource: Boolean,
+        val isFromExternalRepo: Boolean,
     ) : Extension() {
 
         data class Source(
diff --git a/i18n/src/commonMain/resources/MR/base/strings.xml b/i18n/src/commonMain/resources/MR/base/strings.xml
index d19e1f543..5da0b3a54 100644
--- a/i18n/src/commonMain/resources/MR/base/strings.xml
+++ b/i18n/src/commonMain/resources/MR/base/strings.xml
@@ -318,8 +318,8 @@
     <string name="untrusted_extension">Untrusted extension</string>
     <string name="untrusted_extension_message">This extension was signed by any unknown author and wasn\'t loaded.\n\nMalicious extensions can read any stored login credentials or execute arbitrary code.\n\nBy trusting this extension\'s certificate, you accept these risks.</string>
     <string name="obsolete_extension_message">This extension is no longer available. It may not function properly and can cause issues with the app. Uninstalling it is recommended.</string>
-    <string name="unofficial_extension_message">This extension is not from the official list.</string>
-    <string name="extension_api_error">Failed to get extensions list</string>
+    <string name="unofficial_extension_message">This extension is not from the official repo.</string>
+    <string name="extension_api_error">Failed to fetch available extensions</string>
     <string name="ext_info_version">Version</string>
     <string name="ext_info_language">Language</string>
     <string name="ext_info_age_rating">Age rating</string>