diff --git a/include/rospack/rospack.h b/include/rospack/rospack.h
index 4389187..bb7bc2e 100644
--- a/include/rospack/rospack.h
+++ b/include/rospack/rospack.h
@@ -105,8 +105,8 @@ and Rosstack.
 #ifndef ROSPACK_ROSPACK_H
 #define ROSPACK_ROSPACK_H
 
-#include <boost/tr1/unordered_set.hpp>
-#include <boost/tr1/unordered_map.hpp>
+#include <boost/unordered_set.hpp>
+#include <boost/unordered_map.hpp>
 #include <list>
 #include <map>
 #include <set>
@@ -148,8 +148,8 @@ class ROSPACK_DECL Rosstackage
     std::string tag_;
     bool quiet_;
     std::vector<std::string> search_paths_;
-    std::tr1::unordered_map<std::string, std::vector<std::string> > dups_;
-    std::tr1::unordered_map<std::string, Stackage*> stackages_;
+    boost::unordered_map<std::string, std::vector<std::string> > dups_;
+    boost::unordered_map<std::string, Stackage*> stackages_;
     Stackage* findWithRecrawl(const std::string& name);
     void log(const std::string& level, const std::string& msg, bool append_errno);
     void clearStackages();
@@ -159,7 +159,7 @@ class ROSPACK_DECL Rosstackage
                      int depth,
                      bool collect_profile_data,
                      std::vector<DirectoryCrawlRecord*>& profile_data,
-                     std::tr1::unordered_set<std::string>& profile_hash);
+                     boost::unordered_set<std::string>& profile_hash);
     bool isStackage(const std::string& path);
     void loadManifest(Stackage* stackage);
     void computeDeps(Stackage* stackage, bool ignore_errors=false, bool ignore_missing=false);
@@ -171,7 +171,7 @@ class ROSPACK_DECL Rosstackage
                     bool no_recursion_on_wet=false);
     void gatherDepsFull(Stackage* stackage, bool direct,
                         traversal_order_t order, int depth,
-                        std::tr1::unordered_set<Stackage*>& deps_hash,
+                        boost::unordered_set<Stackage*>& deps_hash,
                         std::vector<Stackage*>& deps,
                         bool get_indented_deps,
                         std::vector<std::string>& indented_deps,
diff --git a/src/rospack.cpp b/src/rospack.cpp
index 6b88a36..a3e08a3 100644
--- a/src/rospack.cpp
+++ b/src/rospack.cpp
@@ -259,7 +259,7 @@ Rosstackage::~Rosstackage()
 
 void Rosstackage::clearStackages()
 {
-  for(std::tr1::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
+  for(boost::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
       it != stackages_.end();
       ++it)
   {
@@ -382,7 +382,7 @@ Rosstackage::crawl(std::vector<std::string> search_path,
   search_paths_ = search_path;
 
   std::vector<DirectoryCrawlRecord*> dummy;
-  std::tr1::unordered_set<std::string> dummy2;
+  boost::unordered_set<std::string> dummy2;
   for(std::vector<std::string>::const_iterator p = search_paths_.begin();
       p != search_paths_.end();
       ++p)
@@ -447,7 +447,7 @@ Rosstackage::contents(const std::string& name,
                       std::set<std::string>& packages)
 {
   Rospack rp2;
-  std::tr1::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.find(name);
+  boost::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.find(name);
   if(it != stackages_.end())
   {
     std::vector<std::string> search_paths;
@@ -474,7 +474,7 @@ Rosstackage::contains(const std::string& name,
                       std::string& path)
 {
   Rospack rp2;
-  for(std::tr1::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
+  for(boost::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
       it != stackages_.end();
       ++it)
   {
@@ -503,7 +503,7 @@ Rosstackage::contains(const std::string& name,
 void
 Rosstackage::list(std::set<std::pair<std::string, std::string> >& list)
 {
-  for(std::tr1::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
+  for(boost::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
       it != stackages_.end();
       ++it)
   {
@@ -519,7 +519,7 @@ Rosstackage::listDuplicates(std::vector<std::string>& dups)
 {
   dups.resize(dups_.size());
   int i = 0;
-  for(std::tr1::unordered_map<std::string, std::vector<std::string> >::const_iterator it = dups_.begin();
+  for(boost::unordered_map<std::string, std::vector<std::string> >::const_iterator it = dups_.begin();
       it != dups_.end();
       ++it)
   {
@@ -532,7 +532,7 @@ void
 Rosstackage::listDuplicatesWithPaths(std::map<std::string, std::vector<std::string> >& dups)
 {
   dups.clear();
-  for(std::tr1::unordered_map<std::string, std::vector<std::string> >::const_iterator it = dups_.begin();
+  for(boost::unordered_map<std::string, std::vector<std::string> >::const_iterator it = dups_.begin();
       it != dups_.end();
       ++it)
   {
@@ -598,7 +598,7 @@ Rosstackage::depsIndent(const std::string& name, bool direct,
   {
     computeDeps(stackage);
     std::vector<Stackage*> deps_vec;
-    std::tr1::unordered_set<Stackage*> deps_hash;
+    boost::unordered_set<Stackage*> deps_hash;
     std::vector<std::string> indented_deps;
     gatherDepsFull(stackage, direct, POSTORDER, 0, deps_hash, deps_vec, true, indented_deps);
     for(std::vector<std::string>::const_iterator it = indented_deps.begin();
@@ -1089,7 +1089,7 @@ Rosstackage::plugins(const std::string& name, const std::string& attrib,
   if(!depsOnDetail(name, true, stackages, true))
     return false;
   // Also look in the package itself
-  std::tr1::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.find(name);
+  boost::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.find(name);
   if(it != stackages_.end())
   {
     // don't warn here; it was done in depsOnDetail()
@@ -1102,7 +1102,7 @@ Rosstackage::plugins(const std::string& name, const std::string& attrib,
     std::vector<Stackage*> top_deps;
     if(!depsDetail(top, false, top_deps))
       return false;
-    std::tr1::unordered_set<Stackage*> top_deps_set;
+    boost::unordered_set<Stackage*> top_deps_set;
     for(std::vector<Stackage*>::iterator it = top_deps.begin();
         it != top_deps.end();
         ++it)
@@ -1292,7 +1292,7 @@ Rosstackage::depsOnDetail(const std::string& name, bool direct,
   }
   try
   {
-    for(std::tr1::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
+    for(boost::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
         it != stackages_.end();
         ++it)
     {
@@ -1327,7 +1327,7 @@ Rosstackage::profile(const std::vector<std::string>& search_path,
 {
   double start = time_since_epoch();
   std::vector<DirectoryCrawlRecord*> dcrs;
-  std::tr1::unordered_set<std::string> dcrs_hash;
+  boost::unordered_set<std::string> dcrs_hash;
   for(std::vector<std::string>::const_iterator p = search_path.begin();
       p != search_path.end();
       ++p)
@@ -1437,7 +1437,7 @@ Rosstackage::crawlDetail(const std::string& path,
                          int depth,
                          bool collect_profile_data,
                          std::vector<DirectoryCrawlRecord*>& profile_data,
-                         std::tr1::unordered_set<std::string>& profile_hash)
+                         boost::unordered_set<std::string>& profile_hash)
 {
   if(depth > MAX_CRAWL_DEPTH)
     throw Exception("maximum depth exceeded during crawl");
@@ -1786,7 +1786,7 @@ Rosstackage::gatherDeps(Stackage* stackage, bool direct,
                         std::vector<Stackage*>& deps,
                         bool no_recursion_on_wet)
 {
-  std::tr1::unordered_set<Stackage*> deps_hash;
+  boost::unordered_set<Stackage*> deps_hash;
   std::vector<std::string> indented_deps;
   gatherDepsFull(stackage, direct, order, 0,
                  deps_hash, deps, false, indented_deps, no_recursion_on_wet);
@@ -1795,7 +1795,7 @@ Rosstackage::gatherDeps(Stackage* stackage, bool direct,
 void
 _gatherDepsFull(Stackage* stackage, bool direct,
                             traversal_order_t order, int depth,
-                            std::tr1::unordered_set<Stackage*>& deps_hash,
+                            boost::unordered_set<Stackage*>& deps_hash,
                             std::vector<Stackage*>& deps,
                             bool get_indented_deps,
                             std::vector<std::string>& indented_deps,
@@ -1881,7 +1881,7 @@ _gatherDepsFull(Stackage* stackage, bool direct,
 void
 Rosstackage::gatherDepsFull(Stackage* stackage, bool direct,
                             traversal_order_t order, int depth,
-                            std::tr1::unordered_set<Stackage*>& deps_hash,
+                            boost::unordered_set<Stackage*>& deps_hash,
                             std::vector<Stackage*>& deps,
                             bool get_indented_deps,
                             std::vector<std::string>& indented_deps,
@@ -2068,7 +2068,7 @@ Rosstackage::writeCache()
       {
         char *rpp = getenv("ROS_PACKAGE_PATH");
         fprintf(cache, "#ROS_PACKAGE_PATH=%s\n", (rpp ? rpp : ""));
-        for(std::tr1::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
+        for(boost::unordered_map<std::string, Stackage*>::const_iterator it = stackages_.begin();
             it != stackages_.end();
             ++it)
           fprintf(cache, "%s\n", it->second->path_.c_str());
diff --git a/src/utils.cpp b/src/utils.cpp
index 97a557a..f41a00e 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -28,7 +28,7 @@
 #include <string>
 #include <vector>
 #include <boost/algorithm/string.hpp>
-#include <boost/tr1/unordered_set.hpp>
+#include <boost/unordered_set.hpp>
 
 #include "utils.h"
 
@@ -41,7 +41,7 @@ deduplicate_tokens(const std::string& instring,
                    std::string& outstring)
 {
   std::vector<std::string> vec;
-  std::tr1::unordered_set<std::string> set;
+  boost::unordered_set<std::string> set;
   boost::split(vec, instring,
                boost::is_any_of("\t "),
                boost::token_compress_on);