diff --git a/.github/workflows/fpm.yml b/.github/workflows/fpm.yml
index c47b920..55c4f84 100644
--- a/.github/workflows/fpm.yml
+++ b/.github/workflows/fpm.yml
@@ -42,7 +42,7 @@ jobs:
     - name: Install fpm
       uses: fortran-lang/setup-fpm@v3
       with:
-        fpm-version: 'v0.7.0'
+        fpm-version: 'v0.8.2'
 
     - name: Build fftpack
       run: |
@@ -114,7 +114,7 @@ jobs:
     - name: Install fpm
       uses: fortran-lang/setup-fpm@v3
       with:
-        fpm-version: 'v0.7.0'
+        fpm-version: 'v0.8.2'
 
     - name: fpm build
       run: |
diff --git a/fpm.toml b/fpm.toml
index 7610390..e8a572c 100644
--- a/fpm.toml
+++ b/fpm.toml
@@ -10,6 +10,11 @@ copyright   = "Copyright 1985 National Center for Atmospheric Research, Boulder,
 categories  = ["Fast Fourier Transform"]
 keywords    = ["netlib", "fftpack", "fft"]
 
+[fortran]
+implicit-typing=true
+implicit-external=true
+source-form="default"
+
 [build]
 auto-executables = false
 auto-tests = false