diff --git a/src/_base_types.pxd b/src/_base_types.pxd
index 87ac7e1..1b72eb5 100644
--- a/src/_base_types.pxd
+++ b/src/_base_types.pxd
@@ -1,4 +1,4 @@
-cdef extern from "../lib/dawgdic/base-types.h" namespace "dawgdic":
+cdef extern from "../lib/dawgdic/src/dawgdic/base-types.h" namespace "dawgdic":
     # 8-bit characters.
     ctypedef char CharType
     ctypedef unsigned char UCharType
diff --git a/src/_completer.pxd b/src/_completer.pxd
index d436b8f..3afa93a 100644
--- a/src/_completer.pxd
+++ b/src/_completer.pxd
@@ -4,7 +4,7 @@ from _dictionary cimport Dictionary
 from _guide cimport Guide
 
 
-cdef extern from "../lib/dawgdic/completer.h" namespace "dawgdic" nogil:
+cdef extern from "../lib/dawgdic/src/dawgdic/completer.h" namespace "dawgdic" nogil:
     cdef cppclass Completer:
         Completer()
         Completer(Dictionary &dic, Guide &guide)
diff --git a/src/_dawg.pxd b/src/_dawg.pxd
index 95fdc12..9434765 100644
--- a/src/_dawg.pxd
+++ b/src/_dawg.pxd
@@ -1,7 +1,7 @@
 from _base_types cimport BaseType, SizeType, UCharType, ValueType
 
 
-cdef extern from "../lib/dawgdic/dawg.h" namespace "dawgdic":
+cdef extern from "../lib/dawgdic/src/dawgdic/dawg.h" namespace "dawgdic":
 
     cdef cppclass Dawg:
         Dawg()
diff --git a/src/_dawg_builder.pxd b/src/_dawg_builder.pxd
index 7203a34..2269fee 100644
--- a/src/_dawg_builder.pxd
+++ b/src/_dawg_builder.pxd
@@ -2,7 +2,7 @@ from _base_types cimport BaseType, CharType, SizeType, UCharType, ValueType
 from _dawg cimport Dawg
 
 
-cdef extern from "../lib/dawgdic/dawg-builder.h" namespace "dawgdic":
+cdef extern from "../lib/dawgdic/src/dawgdic/dawg-builder.h" namespace "dawgdic":
     cdef cppclass DawgBuilder:
 
         DawgBuilder() nogil  #(SizeType initial_hash_table_size = DEFAULT_INITIAL_HASH_TABLE_SIZE)
diff --git a/src/_dictionary.pxd b/src/_dictionary.pxd
index d7067ca..c9415c7 100644
--- a/src/_dictionary.pxd
+++ b/src/_dictionary.pxd
@@ -3,7 +3,7 @@ from _dictionary_unit cimport DictionaryUnit
 from iostream cimport istream, ostream
 
 
-cdef extern from "../lib/dawgdic/dictionary.h" namespace "dawgdic":
+cdef extern from "../lib/dawgdic/src/dawgdic/dictionary.h" namespace "dawgdic":
     cdef cppclass Dictionary:
 
         Dictionary() nogil
diff --git a/src/_dictionary_builder.pxd b/src/_dictionary_builder.pxd
index 9641726..b246d31 100644
--- a/src/_dictionary_builder.pxd
+++ b/src/_dictionary_builder.pxd
@@ -3,6 +3,6 @@ from _dawg cimport Dawg
 from _dictionary cimport Dictionary
 
 
-cdef extern from "../lib/dawgdic/dictionary-builder.h" namespace "dawgdic::DictionaryBuilder":
+cdef extern from "../lib/dawgdic/src/dawgdic/dictionary-builder.h" namespace "dawgdic::DictionaryBuilder":
     cdef bint Build (Dawg &dawg, Dictionary *dic) nogil
 
diff --git a/src/_dictionary_unit.pxd b/src/_dictionary_unit.pxd
index 35581a1..5b2308c 100644
--- a/src/_dictionary_unit.pxd
+++ b/src/_dictionary_unit.pxd
@@ -1,7 +1,7 @@
 from _base_types cimport BaseType, CharType, SizeType, UCharType, ValueType
 
 
-cdef extern from "../lib/dawgdic/dictionary-unit.h" namespace "dawgdic":
+cdef extern from "../lib/dawgdic/src/dawgdic/dictionary-unit.h" namespace "dawgdic":
     cdef cppclass DictionaryUnit:
 
         DictionaryUnit() nogil
diff --git a/src/_guide.pxd b/src/_guide.pxd
index 0d23367..20f164d 100644
--- a/src/_guide.pxd
+++ b/src/_guide.pxd
@@ -3,7 +3,7 @@ from _guide_unit cimport GuideUnit
 from iostream cimport istream, ostream
 
 
-cdef extern from "../lib/dawgdic/guide.h" namespace "dawgdic":
+cdef extern from "../lib/dawgdic/src/dawgdic/guide.h" namespace "dawgdic":
     cdef cppclass Guide:
 
         Guide()
diff --git a/src/_guide_builder.pxd b/src/_guide_builder.pxd
index ec36613..fd604bb 100644
--- a/src/_guide_builder.pxd
+++ b/src/_guide_builder.pxd
@@ -4,6 +4,6 @@ from _dictionary cimport Dictionary
 from _guide cimport Guide
 
 
-cdef extern from "../lib/dawgdic/guide-builder.h" namespace "dawgdic::GuideBuilder":
+cdef extern from "../lib/dawgdic/src/dawgdic/guide-builder.h" namespace "dawgdic::GuideBuilder":
     cdef bint Build (Dawg &dawg, Dictionary &dic, Guide* guide) nogil
 
diff --git a/src/_guide_unit.pxd b/src/_guide_unit.pxd
index cc0e9db..0041228 100644
--- a/src/_guide_unit.pxd
+++ b/src/_guide_unit.pxd
@@ -1,7 +1,7 @@
 from _base_types cimport BaseType, CharType, SizeType, UCharType, ValueType
 
 
-cdef extern from "../lib/dawgdic/guide-unit.h" namespace "dawgdic":
+cdef extern from "../lib/dawgdic/src/dawgdic/guide-unit.h" namespace "dawgdic":
     cdef cppclass GuideUnit:
         GuideUnit() nogil