diff --git a/pkgs/development/compilers/adoptopenjdk-bin/generate-sources.py b/pkgs/development/compilers/adoptopenjdk-bin/generate-sources.py
index 63b807bd800..b39090b1670 100755
--- a/pkgs/development/compilers/adoptopenjdk-bin/generate-sources.py
+++ b/pkgs/development/compilers/adoptopenjdk-bin/generate-sources.py
@@ -63,3 +63,4 @@ for release in releases:
 
 with open("sources.json", "w") as f:
     json.dump(out, f, indent=2, sort_keys=True)
+    f.write('\n')
diff --git a/pkgs/development/compilers/adoptopenjdk-bin/sources.json b/pkgs/development/compilers/adoptopenjdk-bin/sources.json
index 87ca2b767d3..36d1f62123c 100644
--- a/pkgs/development/compilers/adoptopenjdk-bin/sources.json
+++ b/pkgs/development/compilers/adoptopenjdk-bin/sources.json
@@ -673,4 +673,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}