diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8cf842ad7b..3a02d2763d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -189,6 +189,10 @@ jobs:
         name: Test hls-stylish-haskell-plugin
         run: cabal test hls-stylish-haskell-plugin --test-options="-j1 --rerun-update" || cabal test hls-stylish-haskell-plugin --test-options="-j1 --rerun" || LSP_TEST_LOG_COLOR=0 LSP_TEST_LOG_MESSAGES=true LSP_TEST_LOG_STDERR=true cabal test hls-stylish-haskell-plugin --test-options="-j1 --rerun"
 
+      - if: ${{ needs.pre_job.outputs.should_skip != 'true' && matrix.test }}
+        name: Test hls-ormolu-plugin
+        run: cabal test hls-ormolu-plugin --test-options="-j1 --rerun-update" || cabal test hls-ormolu-plugin --test-options="-j1 --rerun" || LSP_TEST_LOG_COLOR=0 LSP_TEST_LOG_MESSAGES=true LSP_TEST_LOG_STDERR=true cabal test hls-ormolu-plugin --test-options="-j1 --rerun"
+
       - if: ${{ needs.pre_job.outputs.should_skip != 'true' && matrix.test && matrix.ghc != '9.0.1' }}
         name: Test hls-fourmolu-plugin
         run: cabal test hls-fourmolu-plugin --test-options="-j1 --rerun-update" || cabal test hls-fourmolu-plugin --test-options="-j1 --rerun" || LSP_TEST_LOG_COLOR=0 LSP_TEST_LOG_MESSAGES=true LSP_TEST_LOG_STDERR=true cabal test hls-fourmolu-plugin --test-options="-j1 --rerun"
diff --git a/cabal-ghc901.project b/cabal-ghc901.project
index 02f1519de0..5cd90914b3 100644
--- a/cabal-ghc901.project
+++ b/cabal-ghc901.project
@@ -21,7 +21,7 @@ packages:
          ./plugins/hls-floskell-plugin
          ./plugins/hls-pragmas-plugin
          ./plugins/hls-module-name-plugin
-        --  ./plugins/hls-ormolu-plugin
+         ./plugins/hls-ormolu-plugin
          ./plugins/hls-call-hierarchy-plugin
 tests: true
 
@@ -75,11 +75,11 @@ source-repository-package
 
 write-ghc-environment-files: never
 
-index-state: 2021-08-01T00:00:00Z
+index-state: 2021-08-08T02:21:16Z
 
 constraints:
     -- These plugins doesn't work on GHC9 yet
-    haskell-language-server -brittany -class -fourmolu -ormolu -splice -stylishhaskell -tactic -refineImports
+    haskell-language-server -brittany -class -fourmolu -splice -stylishhaskell -tactic -refineImports
 
 
 allow-newer:
@@ -89,7 +89,6 @@ allow-newer:
     -- brittany:ghc-boot-th,
     -- butcher:base,
     -- fourmolu:ghc-lib-parser,
-    -- ormolu:ghc-lib-parser,
     -- stylish-haskell:ghc-lib-parser,
     -- stylish-haskell:Cabal,
     -- multistate:base,
diff --git a/cabal.project b/cabal.project
index bd27b788ac..b0fbffe75d 100644
--- a/cabal.project
+++ b/cabal.project
@@ -37,7 +37,7 @@ source-repository-package
 
 write-ghc-environment-files: never
 
-index-state: 2021-08-01T00:00:00Z
+index-state: 2021-08-08T02:21:16Z
 
 constraints:
     -- Diagrams doesn't support optparse-applicative >= 0.16 yet
diff --git a/configuration-ghc-901.nix b/configuration-ghc-901.nix
index f0078aa09f..7f3d38554c 100644
--- a/configuration-ghc-901.nix
+++ b/configuration-ghc-901.nix
@@ -8,7 +8,6 @@ let
     "hls-stylish-haskell-plugin"
     "hls-fourmolu-plugin"
     "hls-splice-plugin"
-    "hls-ormolu-plugin"
     "hls-class-plugin"
     "hls-refine-imports-plugin"
   ];
@@ -92,7 +91,6 @@ let
           "-f-brittany"
           "-f-class"
           "-f-fourmolu"
-          "-f-ormolu"
           "-f-splice"
           "-f-stylishhaskell"
           "-f-tactic"