diff --git a/src/fpm/dependency.f90 b/src/fpm/dependency.f90
index 71bc74514f..ee048e2df9 100644
--- a/src/fpm/dependency.f90
+++ b/src/fpm/dependency.f90
@@ -406,6 +406,9 @@ recursive subroutine add_project_dependencies(self, package, root, main, error)
       end if
     end if
 
+    !> Ensure allocation fits
+    call resize(self%dep,self%ndep)
+
   end subroutine add_project_dependencies
 
   !> Add a list of dependencies to the dependency tree
@@ -430,6 +433,9 @@ subroutine add_dependencies(self, dependency, error)
     end do
     if (allocated(error)) return
 
+    !> Ensure allocation fits ndep
+    call resize(self%dep,self%ndep)
+
   end subroutine add_dependencies
 
   !> Add a single dependency node to the dependency tree
@@ -464,6 +470,10 @@ subroutine add_dependency_node(self, dependency, error)
         end if
       end if
     else
+
+      !> Safety: reallocate if necessary
+      if (size(self%dep)==self%ndep) call resize(self%dep,self%ndep+1)
+
       ! New dependency: add from scratch
       self%ndep = self%ndep + 1
       self%dep(self%ndep) = dependency