diff --git a/pkgs/tools/networking/i2p/default.nix b/pkgs/tools/networking/i2p/default.nix
index 681d5d0e7a97..4371d37391be 100644
--- a/pkgs/tools/networking/i2p/default.nix
+++ b/pkgs/tools/networking/i2p/default.nix
@@ -2,11 +2,11 @@
 
 let wrapper = stdenv.mkDerivation rec {
   pname = "wrapper";
-  version = "3.5.35";
+  version = "3.5.43";
 
   src = fetchurl {
     url = "https://wrapper.tanukisoftware.com/download/${version}/wrapper_${version}_src.tar.gz";
-    sha256 = "0mjyw9ays9v6lnj21pmfd3qdvd9b6rwxfmw3pg6z0kyf2jadixw2";
+    sha256 = "19cx3854rk7b2056z8pvxnf4simsg5js7czsy2bys7jl6vh2x02b";
   };
 
   buildInputs = [ jdk ];
@@ -32,11 +32,11 @@ in
 
 stdenv.mkDerivation rec {
   pname = "i2p";
-  version = "0.9.42";
+  version = "0.9.47";
 
   src = fetchurl {
     url = "https://download.i2p2.de/releases/${version}/i2psource_${version}.tar.bz2";
-    sha256 = "04y71hzkdpjzbac569rhyg1zfx37j0alggbl9gnkaqfbprb2nj1h";
+    sha256 = "0krcdm73qing7z918wpml9sk6dn0284wps2ghkmlrdaklfkavk6v";
   };
 
   buildInputs = [ jdk ant gettext which ];
@@ -77,6 +77,6 @@ stdenv.mkDerivation rec {
     homepage = "https://geti2p.net";
     license = licenses.gpl2;
     platforms = [ "x86_64-linux" "i686-linux" ];
-    maintainers = [ maintainers.joelmo ];
+    maintainers = with maintainers; [ joelmo ];
   };
 }
diff --git a/pkgs/tools/networking/i2p/i2p.patch b/pkgs/tools/networking/i2p/i2p.patch
index 74031eb7aef7..3bb4da729173 100644
--- a/pkgs/tools/networking/i2p/i2p.patch
+++ b/pkgs/tools/networking/i2p/i2p.patch
@@ -19,7 +19,7 @@ index eb4995dfe..0186cede3 100644
  
  # Try using the Java binary that I2P was installed with.
  # If it's not found, try looking in the system PATH.
--JAVA=$(which %JAVA_HOME/bin/java || which java)
+-JAVA=$(which "%JAVA_HOME"/bin/java || which java)
 +JAVA=%JAVA%
  
  if [ -z $JAVA ] || [ ! -x $JAVA ]; then