diff --git a/Makefile b/Makefile
index 925fe2f..64ddd1b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,4 @@
-# pgloader build tools
-
-POMO_PATCH = $(realpath patches/postmodern-send-copy-done.patch)
+# pgloader build tool
 ASDF_CONFD = ~/.config/common-lisp/source-registry.conf.d
 ASDF_CONF  = $(ASDF_CONFD)/projects.conf
 
@@ -19,18 +17,13 @@ docs:
 ~/quicklisp/local-projects/cl-abnf:
 	git clone https://github.com/dimitri/cl-abnf.git $@
 
-~/quicklisp/local-projects/cl-db3:
-	git clone https://github.com/dimitri/cl-db3.git $@
-
 ~/quicklisp/local-projects/Postmodern:
 	git clone https://github.com/marijnh/Postmodern.git $@
-	cd ~/quicklisp/local-projects/Postmodern/ && patch -p1 < $(POMO_PATCH)
 
 ~/quicklisp/local-projects/cl-csv:
 	git clone -b empty-strings-and-nil https://github.com/dimitri/cl-csv.git $@
 
 cl-abnf: ~/quicklisp/local-projects/cl-abnf ;
-cl-db3: ~/quicklisp/local-projects/cl-db3 ;
 cl-csv: ~/quicklisp/local-projects/cl-csv ;
 postmodern: ~/quicklisp/local-projects/Postmodern ;
 
@@ -48,7 +41,7 @@ $(ASDF_CONF):
 
 asdf-config: $(ASDF_CONF) ;
 
-$(LIBS): quicklisp $(ASDF_CONF) cl-abnf cl-db3 postmodern cl-csv
+$(LIBS): quicklisp $(ASDF_CONF) cl-abnf postmodern cl-csv
 	sbcl --load ~/quicklisp/setup.lisp                             \
              --eval '(ql:quickload "pgloader")'                        \
              --eval '(quit)'
diff --git a/README.md b/README.md
index ff6650f..e2be50c 100644
--- a/README.md
+++ b/README.md
@@ -53,11 +53,7 @@ irrelevant.
 
 The current version of the code depends on a recent version of
 [Postmodern](http://marijnhaverbeke.nl/postmodern/postmodern.html) not found
-in Quicklisp yet at the time of this writing. Currently the pgloader source
-tree contains a patch to apply against postmodern sources, and the
-`Makefile` will do the following for you:
-
-Read https://github.com/marijnh/Postmodern/issues/39 for details.
+in Quicklisp yet at the time of this writing.
 
 #### cl-csv
 
diff --git a/patches/postmodern-send-copy-done.patch b/patches/postmodern-send-copy-done.patch
deleted file mode 100644
index 221489d..0000000
--- a/patches/postmodern-send-copy-done.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-diff --git a/cl-postgres/bulk-copy.lisp b/cl-postgres/bulk-copy.lisp
-index f8efdb3..0f020d6 100644
---- a/cl-postgres/bulk-copy.lisp
-+++ b/cl-postgres/bulk-copy.lisp
-@@ -120,13 +120,18 @@
-   (with-syncing
-     (copy-done-message socket)
-     (force-output socket)
--    (message-case socket
--      (#\C (let* ((command-tag (read-str socket))
--		  (space (position #\Space command-tag :from-end t)))
--	     (when space
--	       (parse-integer command-tag :junk-allowed t :start (1+ space))))))
-+    (handler-case
-+	(message-case socket
-+	    (#\C (let* ((command-tag (read-str socket))
-+			(space (position #\Space command-tag :from-end t)))
-+		   (when space
-+		     (parse-integer command-tag :junk-allowed t :start (1+ space))))))
-+      (condition (e)
-+	;; In case of error in the COPY stream we need to wait for an
-+	;; explicit ReadyForQuery message. Then we re-signal the error.
-+	(message-case socket (#\Z (read-uint1 socket)))
-+	(error e)))
-     (loop (message-case socket
- 	    (#\Z (read-uint1 socket)
- 		 (return-from send-copy-done))
- 	    (t :skip)))))
--