diff --git a/.gitlab/ci.sh b/.gitlab/ci.sh
index 469be94242f..2e653df1514 100755
--- a/.gitlab/ci.sh
+++ b/.gitlab/ci.sh
@@ -8,12 +8,14 @@ export GHCUP_INSTALL_BASE_PREFIX="$CI_PROJECT_DIR/toolchain"
 export CABAL_DIR="$CI_PROJECT_DIR/cabal"
 
 case "$(uname)" in
-    MSYS_*|MINGW*)
-        export CABAL_DIR="$(cygpath -w "$CABAL_DIR")"
+	MSYS_*|MINGW*)
+		export CABAL_DIR="$(cygpath -w "$CABAL_DIR")"
 		GHCUP_BINDIR="${GHCUP_INSTALL_BASE_PREFIX}/ghcup/bin"
-        ;;
+		EXE_EXT=".exe"
+		;;
 	*)
 		GHCUP_BINDIR="${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/bin"
+		EXE_EXT=""
 		;;
 esac
 
@@ -61,7 +63,7 @@ args=(
 run cabal v2-build ${args[@]} cabal-install
 
 mkdir "$CI_PROJECT_DIR/out"
-cp "$(cabal list-bin ${args[@]} cabal-install:exe:cabal)" "$CI_PROJECT_DIR/out/cabal"
+cp "$(cabal list-bin ${args[@]} cabal-install:exe:cabal)" "$CI_PROJECT_DIR/out/cabal$EXE_EXT"
 cp dist-newstyle/cache/plan.json "$CI_PROJECT_DIR/out/plan.json"
 cd "$CI_PROJECT_DIR/out/"
 
@@ -69,10 +71,10 @@ cd "$CI_PROJECT_DIR/out/"
 TARBALL_PREFIX="cabal-install-$("$CI_PROJECT_DIR/out/cabal" --numeric-version)"
 case "${TARBALL_EXT}" in
     zip)
-        zip "${TARBALL_PREFIX}-${TARBALL_ARCHIVE_SUFFIX}.${TARBALL_EXT}" cabal plan.json
+        zip "${TARBALL_PREFIX}-${TARBALL_ARCHIVE_SUFFIX}.${TARBALL_EXT}" "cabal${EXE_EXT}" plan.json
         ;;
     tar.xz)
-        tar caf "${TARBALL_PREFIX}-${TARBALL_ARCHIVE_SUFFIX}.${TARBALL_EXT}" cabal plan.json
+        tar caf "${TARBALL_PREFIX}-${TARBALL_ARCHIVE_SUFFIX}.${TARBALL_EXT}" "cabal${EXE_EXT}" plan.json
         ;;
     *)
         fail "Unknown TARBALL_EXT: ${TARBALL_EXT}"