diff --git a/src/MiniDocs/Nimble.class.st b/src/MiniDocs/Nimble.class.st
index 723b101..a121ec5 100644
--- a/src/MiniDocs/Nimble.class.st
+++ b/src/MiniDocs/Nimble.class.st
@@ -19,6 +19,7 @@ Nimble class >> detect: packageName [
 { #category : #accessing }
 Nimble class >> install: packageName [
 	(self detect: packageName) ifTrue: [ ^ self ].
+	self installPackagesList.
 	OSSUnixSubprocess new
 		command: 'nimble';
 		arguments: {'install'.
@@ -27,6 +28,18 @@ Nimble class >> install: packageName [
 		runAndWaitOnExitDo: [ :process :outString | ^ outString ]
 ]
 
+{ #category : #accessing }
+Nimble class >> installPackagesList [
+
+	(FileLocator home / '.nimble' / 'packages_official.json') exists
+		ifTrue: [ ^ self ].
+	OSSUnixSubprocess new
+		command: 'nimble';
+		arguments: #('refresh');
+		redirectStdout;
+		runAndWaitOnExitDo: [ :process :outString | ^ outString ]
+]
+
 { #category : #accessing }
 Nimble class >> installed [
 	| installed |