diff --git a/bootstrap.sh b/bootstrap.sh
index e7722b86777..9bc96f13370 100644
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -46,13 +46,14 @@ done
 
 # Versions of the packages to install.
 # The version regex says what existing installed versions are ok.
-PARSEC_VER="2.1.0.1";   PARSEC_VER_REGEXP="2\."     # == 2.*
-NETWORK_VER="2.2.1.10"; NETWORK_VER_REGEXP="2\."    # == 2.*
-CABAL_VER="1.10.0.0";   CABAL_VER_REGEXP="1\.10\."  # == 1.10.*
-MTL_VER="1.1.1.0";      MTL_VER_REGEXP="1\.1\."     # == 1.1.*
-HTTP_VER="4000.0.10";   HTTP_VER_REGEXP="4000\.0"   # == 4000.0.*
-ZLIB_VER="0.5.2.0";     ZLIB_VER_REGEXP="0\.[45]\." # == 0.4.* || ==0.5.*
-TIME_VER="1.2.0.3"      TIME_VER_REGEXP="1\.[12]\." # == 0.1.* || ==0.2.*
+PARSEC_VER="3.1.1";    PARSEC_VER_REGEXP="[23]\."  # == 2.* || == 3.*
+NETWORK_VER="2.3.0.2"; NETWORK_VER_REGEXP="2\."    # == 2.*
+CABAL_VER="1.10.1.0";  CABAL_VER_REGEXP="1\.10\."  # == 1.10.*
+TRANS_VER="0.2.2.0";   TRANS_VER_REGEXP="0\.2\."   # == 0.2.*
+MTL_VER="2.0.1.0";     MTL_VER_REGEXP="[12]\."     # == 1.* || == 2.*
+HTTP_VER="4000.1.1";   HTTP_VER_REGEXP="4000\.[01]\." # == 4000.0.* || 4000.1.*
+ZLIB_VER="0.5.3.1";    ZLIB_VER_REGEXP="0\.[45]\." # == 0.4.* || ==0.5.*
+TIME_VER="1.2.0.4"     TIME_VER_REGEXP="1\.[12]\." # == 0.1.* || ==0.2.*
 
 HACKAGE_URL="http://hackage.haskell.org/packages/archive"
 
@@ -182,21 +183,23 @@ do_pkg () {
 
 # Actually do something!
 
-info_pkg "parsec"  ${PARSEC_VER}  ${PARSEC_VER_REGEXP}
-info_pkg "network" ${NETWORK_VER} ${NETWORK_VER_REGEXP}
-info_pkg "Cabal"   ${CABAL_VER}   ${CABAL_VER_REGEXP}
-info_pkg "mtl"     ${MTL_VER}     ${MTL_VER_REGEXP}
-info_pkg "time"    ${TIME_VER}   ${TIME_VER_REGEXP}
-info_pkg "HTTP"    ${HTTP_VER}    ${HTTP_VER_REGEXP}
-info_pkg "zlib"    ${ZLIB_VER}    ${ZLIB_VER_REGEXP}
-
-do_pkg "parsec"  ${PARSEC_VER}  ${PARSEC_VER_REGEXP}
-do_pkg "network" ${NETWORK_VER} ${NETWORK_VER_REGEXP}
-do_pkg "Cabal"   ${CABAL_VER}   ${CABAL_VER_REGEXP}
-do_pkg "mtl"     ${MTL_VER}     ${MTL_VER_REGEXP}
-do_pkg "time"    ${TIME_VER}    ${TIME_VER_REGEXP}
-do_pkg "HTTP"    ${HTTP_VER}    ${HTTP_VER_REGEXP}
-do_pkg "zlib"    ${ZLIB_VER}    ${ZLIB_VER_REGEXP}
+info_pkg "transformers" ${TRANS_VER}   ${TRANS_VER_REGEXP}
+info_pkg "mtl"          ${MTL_VER}     ${MTL_VER_REGEXP}
+info_pkg "parsec"       ${PARSEC_VER}  ${PARSEC_VER_REGEXP}
+info_pkg "network"      ${NETWORK_VER} ${NETWORK_VER_REGEXP}
+info_pkg "Cabal"        ${CABAL_VER}   ${CABAL_VER_REGEXP}
+info_pkg "time"         ${TIME_VER}    ${TIME_VER_REGEXP}
+info_pkg "HTTP"         ${HTTP_VER}    ${HTTP_VER_REGEXP}
+info_pkg "zlib"         ${ZLIB_VER}    ${ZLIB_VER_REGEXP}
+
+do_pkg   "transformers" ${TRANS_VER}   ${TRANS_VER_REGEXP}
+do_pkg   "mtl"          ${MTL_VER}     ${MTL_VER_REGEXP}
+do_pkg   "parsec"       ${PARSEC_VER}  ${PARSEC_VER_REGEXP}
+do_pkg   "network"      ${NETWORK_VER} ${NETWORK_VER_REGEXP}
+do_pkg   "Cabal"        ${CABAL_VER}   ${CABAL_VER_REGEXP}
+do_pkg   "time"         ${TIME_VER}    ${TIME_VER_REGEXP}
+do_pkg   "HTTP"         ${HTTP_VER}    ${HTTP_VER_REGEXP}
+do_pkg   "zlib"         ${ZLIB_VER}    ${ZLIB_VER_REGEXP}
 
 install_pkg "cabal-install"