diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 517ca8b..1cd2582 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -3,6 +3,7 @@ on: [push, pull_request]
 jobs:
   ubuntu:
     runs-on: ubuntu-latest
+    if: ${{ !startsWith(github.ref_name, 'windows') }}
     strategy:
       fail-fast: false
       matrix:
@@ -26,6 +27,7 @@ jobs:
           make prove_installcheck
   mac:
     runs-on: macos-latest
+    if: ${{ !startsWith(github.ref_name, 'windows') }}
     steps:
       - uses: actions/checkout@v3
       - uses: ankane/setup-postgres@v1
@@ -54,4 +56,5 @@ jobs:
           nmake /NOLOGO /F Makefile.win
           nmake /NOLOGO /F Makefile.win install
           nmake /NOLOGO /F Makefile.win installcheck
+          nmake /NOLOGO /F Makefile.win prove_installcheck PROVE=prove
         shell: cmd
diff --git a/Makefile.win b/Makefile.win
index 107f6c9..b473714 100644
--- a/Makefile.win
+++ b/Makefile.win
@@ -54,3 +54,7 @@ install:
 
 installcheck:
 	"$(BINDIR)\pg_regress" --bindir="$(BINDIR)" $(REGRESS_OPTS) $(REGRESS)
+
+prove_installcheck:
+	rm -rf tmp_check
+	PGPORT=65432 PG_REGRESS="$(BINDIR)\pg_regress" $(PROVE) $(PG_PROVE_FLAGS) $(PROVE_FLAGS) test/t/*.pl