diff --git a/.github/workflows/update_metadata.yml b/.github/workflows/update_metadata.yml
index 7b83b5a03..82a36230f 100644
--- a/.github/workflows/update_metadata.yml
+++ b/.github/workflows/update_metadata.yml
@@ -26,12 +26,6 @@ jobs:
     - name: Build Blockly blocks
       run: npm run build:blocks
 
-    - name: Gzip Blockly
-      run: gzip -k build/blockly_compressed.js
-
-    - name: Gzip Blockly blocks
-      run: gzip -k build/blocks_compressed.js
-
     - name: Update Metadata
       run: source ./tests/scripts/update_metadata.sh
 
diff --git a/tests/scripts/update_metadata.sh b/tests/scripts/update_metadata.sh
index d0dac71e7..d3b97f3ab 100755
--- a/tests/scripts/update_metadata.sh
+++ b/tests/scripts/update_metadata.sh
@@ -3,6 +3,9 @@
 # Determines the size of generated files and updates check_metadata.sh to
 # reflect the new values.
 
+gzip -k build/blockly_compressed.js
+gzip -k build/blocks_compressed.js
+
 blockly_size=$(wc -c < "build/blockly_compressed.js")
 blocks_size=$(wc -c < "build/blocks_compressed.js")
 blockly_gz_size=$(wc -c < "build/blockly_compressed.js.gz")