diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 18b0b1a7a8..4869b9b7b7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -120,110 +120,15 @@ jobs:
         run: |
           ctest --test-dir build -V --timeout 1700 -R integrated_test
 
-      - name: Module_Base Unittests
+      - name: All Module Unittests
         env:
           GTEST_COLOR: 'yes'
           OMP_NUM_THREADS: '2'
         run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_BASE
-
-      - name: Module_IO Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_IO
-
-      - name: Module_HSolver Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_HSOLVER -E PERF_MODULE_HSOLVER_KERNELS
-
-      - name: Module_Cell Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_CELL
-
-      - name: Module_MD Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_MD
-
-      - name: Module_Psi Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_PSI
-
-      - name: Module_RI Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_RI
-
-      - name: Module_Estate Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_ESTATE
-
-      - name: Module_Hamilt Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_HAMILT
-
-      - name: Module_PW Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_PW
-
-      - name: Module_LCAO Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_LCAO
-
-      - name: Module_AO Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_AO
-
-      - name: Module_NAO Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_NAO
-
-      - name: Module_RELAX Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_RELAX
-
-      - name: Module_LR Unittests
-        env:
-          GTEST_COLOR: 'yes'
-          OMP_NUM_THREADS: '2'
-        run: |
-          ctest --test-dir build -V --timeout 1700 -R MODULE_LR
+          # Run all module unit tests in one parallel ctest invocation
+          # instead of 16 serial steps (measured ~4.5 min serial).
+          ctest --test-dir build --output-on-failure --timeout 1700 -j "$(nproc)" \
+            -R 'MODULE_' -E PERF_MODULE_HSOLVER_KERNELS
 
       - name: 01_PW Test
         env:
@@ -307,4 +212,7 @@ jobs:
           GTEST_COLOR: 'yes'
           OMP_NUM_THREADS: '2'
         run: |
-          ctest --test-dir build -V --timeout 1700 -E 'integrate_test|01_PW|02_NAO_Gamma|03_NAO_multik|04_FF|05_rtTDDFT|06_SDFT|07_OFDFT|08_EXX|09_DeePKS|10_others|11_PW_GPU|12_NAO_Gamma_GPU|13_NAO_multik_GPU|15_rtTDDFT_GPU|16_SDFT_GPU|17_DS_DFTU|MODULE_BASE|MODULE_IO|MODULE_HSOLVER|MODULE_CELL|MODULE_MD|MODULE_PSI|MODULE_ESTATE|MODULE_RI|MODULE_HAMILT|MODULE_PW|MODULE_LCAO|MODULE_AO|MODULE_NAO|MODULE_RELAX|MODULE_LR'
+          # Exclude every MODULE_* test with a single regex: the old list of
+          # 15 MODULE_* prefixes missed MODULE_ESOLVER, which made it run
+          # twice (once here, once under "All Module Unittests").
+          ctest --test-dir build -V --timeout 1700 -E 'integrate_test|01_PW|02_NAO_Gamma|03_NAO_multik|04_FF|05_rtTDDFT|06_SDFT|07_OFDFT|08_EXX|09_DeePKS|10_others|11_PW_GPU|12_NAO_Gamma_GPU|13_NAO_multik_GPU|15_rtTDDFT_GPU|16_SDFT_GPU|17_DS_DFTU|MODULE_'