diff --git a/DEPENDS b/DEPENDS
index 71abc3b2..ea7133a5 100644
--- a/DEPENDS
+++ b/DEPENDS
@@ -35,5 +35,5 @@
  All of them are available at CPAN, see http://search.cpan.org/
  Use your distribution’s packages or cpan(1) to install them.
 
- i3-migrate-config-to-v4.pl is implemented in Perl, but it has no dependencies
+ i3-migrate-config-to-v4 is implemented in Perl, but it has no dependencies
  besides Perl 5.10.
diff --git a/Makefile b/Makefile
index 7a904320..3bdffbb4 100644
--- a/Makefile
+++ b/Makefile
@@ -79,7 +79,7 @@ install: all
 	$(INSTALL) -d -m 0755 $(DESTDIR)$(PREFIX)/include/i3
 	$(INSTALL) -d -m 0755 $(DESTDIR)$(PREFIX)/share/xsessions
 	$(INSTALL) -m 0755 i3 $(DESTDIR)$(PREFIX)/bin/
-	$(INSTALL) -m 0755 i3-migrate-config-to-v4.pl $(DESTDIR)$(PREFIX)/bin/
+	$(INSTALL) -m 0755 i3-migrate-config-to-v4 $(DESTDIR)$(PREFIX)/bin/
 	test -e $(DESTDIR)$(SYSCONFDIR)/i3/config || $(INSTALL) -m 0644 i3.config $(DESTDIR)$(SYSCONFDIR)/i3/config
 	test -e $(DESTDIR)$(SYSCONFDIR)/i3/config.keycodes || $(INSTALL) -m 0644 i3.config.keycodes $(DESTDIR)$(SYSCONFDIR)/i3/config.keycodes
 	$(INSTALL) -m 0644 i3.welcome $(DESTDIR)$(SYSCONFDIR)/i3/welcome
@@ -93,7 +93,7 @@ dist: distclean
 	[ ! -d i3-${VERSION} ] || rm -rf i3-${VERSION}
 	[ ! -e i3-${VERSION}.tar.bz2 ] || rm i3-${VERSION}.tar.bz2
 	mkdir i3-${VERSION}
-	cp i3-migrate-config-to-v4.pl i3.config.keycodes DEPENDS GOALS LICENSE PACKAGE-MAINTAINER TODO RELEASE-NOTES-${VERSION} i3.config i3.desktop i3.welcome pseudo-doc.doxygen i3-wsbar Makefile i3-${VERSION}
+	cp i3-migrate-config-to-v4 i3.config.keycodes DEPENDS GOALS LICENSE PACKAGE-MAINTAINER TODO RELEASE-NOTES-${VERSION} i3.config i3.desktop i3.welcome pseudo-doc.doxygen i3-wsbar Makefile i3-${VERSION}
 	cp -r src i3-msg i3-nagbar i3-config-wizard yajl-fallback include man i3-${VERSION}
 	# Only copy toplevel documentation (important stuff)
 	mkdir i3-${VERSION}/docs
diff --git a/PACKAGE-MAINTAINER b/PACKAGE-MAINTAINER
index 633b2d7e..3d9a8e18 100644
--- a/PACKAGE-MAINTAINER
+++ b/PACKAGE-MAINTAINER
@@ -26,7 +26,7 @@ On debian, this looks like this:
 	mkdir -p $(CURDIR)/debian/i3-wm/usr/share/man/man1
 	cp man/*.1 $(CURDIR)/debian/i3-wm/usr/share/man/man1
 
-Please make sure that i3-migrate-config-to-v4.pl and i3-config-wizard are
+Please make sure that i3-migrate-config-to-v4 and i3-config-wizard are
 installed with i3. The Perl script is necessary to (automatically) convert v3
 configs to v4. The wizard provides the possibility to create a keysym-based
 config with the user’s preferred modifier and should be started on the first
diff --git a/RELEASE-NOTES-4.0 b/RELEASE-NOTES-4.0
index a9a91134..14ecbfa1 100644
--- a/RELEASE-NOTES-4.0
+++ b/RELEASE-NOTES-4.0
@@ -40,7 +40,7 @@ now.
 
  • As the configuration file needs new commands (and a few options are
    obsolete), you need to change it. To make this process a little bit easier
-   for you, this release comes with the script i3-migrate-config-to-v4.pl. Just
+   for you, this release comes with the script i3-migrate-config-to-v4. Just
    run it on your current config file and it will spit out a v4 config file to
    stdout. To make things even better, i3 automatically detects v3 config files
    and calls that script, so you never end up with a non-working config :).
diff --git a/debian/changelog b/debian/changelog
index bfcbc324..aeca9a2b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -14,7 +14,7 @@ i3-wm (4.0-1) unstable; urgency=low
     of all Firefox windows.
   * As the configuration file needs new commands (and a few options are
     obsolete), you need to change it. To make this process a little bit easier
-    for you, this release comes with the script i3-migrate-config-to-v4.pl. Just
+    for you, this release comes with the script i3-migrate-config-to-v4. Just
     run it on your current config file and it will spit out a v4 config file to
     stdout. To make things even better, i3 automatically detects v3 config files
     and calls that script, so you never end up with a non-working config :).
diff --git a/i3-migrate-config-to-v4.pl b/i3-migrate-config-to-v4
similarity index 100%
rename from i3-migrate-config-to-v4.pl
rename to i3-migrate-config-to-v4
diff --git a/src/cfgparse.y b/src/cfgparse.y
index ecfa6658..ae789576 100644
--- a/src/cfgparse.y
+++ b/src/cfgparse.y
@@ -115,7 +115,7 @@ next:
 }
 
 /*
- * Calls i3-migrate-config-to-v4.pl to migrate a configuration file (input
+ * Calls i3-migrate-config-to-v4 to migrate a configuration file (input
  * buffer).
  *
  * Returns the converted config file or NULL if there was an error (for
@@ -153,7 +153,7 @@ static char *migrate_config(char *input, off_t size) {
             NULL, /* will be replaced by the executable path */
             NULL
         };
-        exec_i3_utility("i3-migrate-config-to-v4.pl", argv);
+        exec_i3_utility("i3-migrate-config-to-v4", argv);
     }
 
     /* parent */
@@ -438,7 +438,7 @@ void parse_file(const char *f) {
             printf("\n");
             printf("Please convert your config file to v4. You can use this command:\n");
             printf("    mv %s %s.O\n", f, f);
-            printf("    i3-migrate-config-to-v4.pl %s.O > %s\n", f, f);
+            printf("    i3-migrate-config-to-v4 %s.O > %s\n", f, f);
             printf("****************************************************************\n");
             printf("\n");
             free(new);
@@ -446,7 +446,7 @@ void parse_file(const char *f) {
         } else {
             printf("\n");
             printf("**********************************************************************\n");
-            printf("ERROR: Could not convert config file. Maybe i3-migrate-config-to-v4.pl\n");
+            printf("ERROR: Could not convert config file. Maybe i3-migrate-config-to-v4\n");
             printf("was not correctly installed on your system?\n");
             printf("**********************************************************************\n");
             printf("\n");
diff --git a/testcases/t/71-config-migrate.t b/testcases/t/71-config-migrate.t
index e93ca9e7..4e97fb27 100644
--- a/testcases/t/71-config-migrate.t
+++ b/testcases/t/71-config-migrate.t
@@ -2,7 +2,7 @@
 # vim:ts=4:sw=4:expandtab
 # !NO_I3_INSTANCE! will prevent complete-run.pl from starting i3
 #
-# Tests if i3-migrate-config-to-v4.pl correctly migrates all config file
+# Tests if i3-migrate-config-to-v4 correctly migrates all config file
 # directives and commands
 #
 use i3test;
@@ -27,7 +27,7 @@ sub migrate_config {
     print $fh $config;
     close($fh);
 
-    my $cmd = "sh -c 'exec " . abs_path("../i3-migrate-config-to-v4.pl") . " --v3 <$tmpfile'";
+    my $cmd = "sh -c 'exec " . abs_path("../i3-migrate-config-to-v4") . " --v3 <$tmpfile'";
     return [ split /\n/, qx($cmd) ];
 }