diff --git a/src/dihedral.cpp b/src/dihedral.cpp
index 14b59d2542..a6e66ac9cf 100644
--- a/src/dihedral.cpp
+++ b/src/dihedral.cpp
@@ -33,6 +33,7 @@ Dihedral::Dihedral(LAMMPS *_lmp) : Pointers(_lmp)
 {
   energy = 0.0;
   writedata = 0;
+  reinitflag = 1;
 
   allocated = 0;
   suffix_flag = Suffix::NONE;
@@ -428,3 +429,15 @@ double Dihedral::memory_usage()
   bytes += (double) comm->nthreads * maxcvatom * 9 * sizeof(double);
   return bytes;
 }
+
+/* -----------------------------------------------------------------------
+   reset all type-based dihedral params via init()
+-------------------------------------------------------------------------- */
+
+void Dihedral::reinit()
+{
+  if (!reinitflag)
+    error->all(FLERR, "Fix adapt interface to this dihedral style not supported");
+
+  init();
+}
diff --git a/src/dihedral.h b/src/dihedral.h
index 03a5690a49..7ca3379e44 100644
--- a/src/dihedral.h
+++ b/src/dihedral.h
@@ -37,6 +37,9 @@ class Dihedral : protected Pointers {
                              // CENTROID_AVAIL = different and implemented
                              // CENTROID_NOTAVAIL = different, not yet implemented
 
+  int reinitflag;            // 0 if not compatible with fix adapt
+                             // extract() method may still need to be added
+
   // KOKKOS host/device flag and data masks
 
   ExecutionSpace execution_space;
@@ -62,6 +65,8 @@ class Dihedral : protected Pointers {
     du = 0.0;
     du2 = 0.0;
   }
+  virtual void *extract(const char *, int &) { return nullptr; }
+  void reinit();
 
  protected:
   int suffix_flag;    // suffix compatibility flag
diff --git a/src/dihedral_hybrid.cpp b/src/dihedral_hybrid.cpp
index 3671391f5d..6210009170 100644
--- a/src/dihedral_hybrid.cpp
+++ b/src/dihedral_hybrid.cpp
@@ -326,6 +326,14 @@ void DihedralHybrid::init_style()
     if (styles[m]) styles[m]->init_style();
 }
 
+/* ---------------------------------------------------------------------- */
+
+int DihedralHybrid::check_itype(int itype, char *substyle)
+{
+  if (strcmp(keywords[map[itype]], substyle) == 0) return 1;
+  return 0;
+}
+
 /* ----------------------------------------------------------------------
    proc 0 writes to restart file
 ------------------------------------------------------------------------- */
diff --git a/src/dihedral_hybrid.h b/src/dihedral_hybrid.h
index debc8a9d8d..4dcadcb67a 100644
--- a/src/dihedral_hybrid.h
+++ b/src/dihedral_hybrid.h
@@ -40,6 +40,8 @@ class DihedralHybrid : public Dihedral {
   void read_restart(FILE *) override;
   double memory_usage() override;
 
+  int check_itype(int, char *);
+
  protected:
   int *map;    // which style each dihedral type points to